CPT FINAL EXAM REVIEW 1
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The most common examples of circumstances that require a modifier are:
1. A service or procedure has both a professional and technical component,
but only one component is applicable.
2. A service or procedure was performed by more than one physician or in
more than one location.
3. The time spent to perform a service or procedure was longer or shorter
than the CPT code would otherwise indicate.
4. Only part of a service was performed.
5. An adjunctive service was performed.
6. A bilateral procedure was performed.
7. A service or procedure was performed more than once.
8. Unusual events occurred during a procedure or service.
Modifiers are based on medical records or other medical documentation. A
modifier should not be appended to a CPT code unless facts that support the
modifier can be located in the medical documentation. Adding a modifier
that is not supported by medical records can be a sign of fraud or overbilling.
Common Examples of CPT Code
Modifiers
Certain Evaluation and Management (E/M) CPT codes are assigned according
to the level of service provided. The highest level service generally takes the
most amount of time. When the highest level CPT code does not reflect the
full time that the provider spent to deliver the service, the code modifier 21
may be added to indicate that services were prolonged. In some cases, it
may be more appropriate to use a 5-digit “prolonged services” CPT code
rather than adding a modifier.
The 21 modifier should not be routinely added to E/M codes and should only
be added to the highest level codes. The frequent addition of a 21 modifier
to a billing or series of billings may be a red flag that will alert auditors
or
medical billing experts
to the possibility of fraud.
Billers add 25 as a modifier when the patient received an additional service
that was separate or distinct from another procedure that is being billed. For
example, when a patient comes in for an in-person dialysis but receives a
separate examination and diagnosis of an unrelated problem, the 25 modifier
might be appropriate to make clear that the separate examination was
unrelated to the dialysis.
The modifier 22 is added to CPT codes when a procedure took longer than
usual to perform and when no other CPT code addresses the prolonged
nature of the service. Unusual blood loss, hemorrhage, or unexpected
complications during surgery might justify use of the 22 modifier, assuming
that the medical records reflect the unusual circumstances.
The modifier 52 is used to reflect reduced services. For example, the CPT
code for a comprehensive x-ray might be modified when only a limited
comparative x-ray is performed. When a surgeon decides to discontinue
surgery based on unexpected findings that suggest a threat to the patient,
the modifier 52 will indicate that the procedure took less time than a
completed surgery would have taken.
Payers may or may not take modifiers into account when they pay for
services. Accurate billings nevertheless depend upon the accurate use of
modifiers. While the rules governing modifiers are complex, medical billing
experts understand the importance of following those rules with precision.
What are medical coding modifiers?
ARTICLE
A medical coding modifier is two characters (letters or numbers) appended
to a CPT
®
or HCPCS Level II code. The modifier provides additional
information about the medical procedure, service, or supply involved without
changing the meaning of the code. Medical coders use modifiers to tell the
story of a particular encounter.
For instance, a coder may use a modifier to indicate a service did not occur
exactly as described by a CPT
®
or HCPCS Level II code descriptor, but the
circumstance did not change the code that applies. A modifier also may
provide details not included in the code descriptor, such as the anatomic
location of the procedure. Some payer programs may have modifiers that
apply only when you’re reporting codes in connection with those programs,
as well.
The CPT
®
code book Introduction provides these additional examples of when
a modifier may be appropriate:
The service or procedure has both professional and technical
components.
More than one provider performed the service or procedure.
More than one location was involved.
A service or procedure was increased or reduced in comparison to what
the code typically requires.
The procedure was bilateral.
The service or procedure was provided to the patient more than once.
Proper use of modifiers is important both for accurate coding and because
some modifiers affect reimbursement for the provider. Omitting modifiers or
using the wrong modifiers may cause claim denials that lead to rework,
payment delays, and potential reimbursement loss.
CPT
®
modifiers
The American Medical Association (AMA) holds copyright
in CPT
®
. CPT
®
modifiers are generally two digits, although performance
measure modifiers that apply only to CPT
®
Category II codes are
alphanumeric (1P-8P).
These are examples of some of the most commonly used
CPT
®
modifiers
:
25: Significant, separately identifiable evaluation and management
service by the same physician or other qualified health care
professional on the same day of the procedure or other service
26: Professional component
59: Distinct procedural service
You’ll find CPT
®
modifiers listed in your
CPT
®
code book
. A complete
online CPT
®
resource also should include CPT
®
modifiers. Note that CPT
®
code
books often include an abbreviated list of HCPCS Level II modifiers.
HCPCS Level II modifiers
HCPCS Level II codes and modifiers are maintained by the Centers for
Medicare & Medicaid Services (CMS). HCPCS Level II modifiers are
alphanumeric or have two letters.
Below are some examples of HCPCS Level II modifiers:
E1: Upper left, eyelid
TC: Technical component; under certain circumstances, a charge may
be made for the technical component alone; under those
circumstances the technical component charge is identified by adding
modifier ‘tc’ to the usual procedure number; technical component
charges are institutional charges and not billed separately by
physicians; however, portable x-ray suppliers only bill for technical
component and should utilize modifier tc; the charge data from
portable x-ray suppliers will then be used to build customary and
prevailing profiles
XS: Separate structure, a service that is distinct because it was
performed on a separate organ/structure
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You can find HCPCS Level II modifier lists in
HCPCS Level II code books
and in
online coding resources. Because the HCPCS Level II code set is not
copyrighted, the modifiers are also publicly available on
CMS’ Alpha-Numeric
HCPCS site
and
HCPCS Quarterly Update site
.
Pricing modifiers and informational modifiers
In addition to separating modifiers based on whether they’re from
the CPT
®
or
HCPCS Level II code
set, modifiers are also categorized by type.
Two important categories are pricing modifiers (also called payment-
impacting modifiers or reimbursement modifiers) and informational
modifiers.
Pricing modifiers
A pricing modifier is a medical coding modifier that causes a pricing change
for the code reported. The Multi-Carrier System (MCS) that Medicare uses for
claims processing requires pricing modifiers to be in the first modifier
position, before any informational modifiers. On the CMS 1500 claim form,
the appropriate field is 24D (shown below). You enter the pricing modifier
directly to the right of the procedure code on the claim. Most providers use
the electronic equivalent of this form to bill Medicare for professional (pro-
fee) services.
Claims that do not have the pricing modifier in the first position may
encounter processing delays. To assist with proper reporting and modifier
placement, individual payers may provide lists that distinguish pricing
modifiers from informational modifiers for their claims. For instance, the WPS
Government Health Administrators (WPS GHA) site includes a
Pricing Modifier
Fact Sheet
that not only lists pricing modifiers, but also identifies which of
those modifiers you should put in a secondary position if another pricing
modifier is required for the code.
Informational modifiers
An informational modifier is a medical coding modifier not classified as a
payment modifier. Another name for informational modifiers is statistical
modifiers. These modifiers belong after pricing modifiers on the claim.
Note that informational modifiers may affect whether a code gets
reimbursed, so they may be relevant to payment, despite the name
“informational.” For instance, coders often use modifier 59 to override
Medicare’s National Correct Coding Initiative (NCCI) Procedure-to-Procedure
(PTP) edits, bringing in payment for both codes in the code edit pair.
Although you would not receive payment for the Column 2 code of the edit
without modifier 59 on one of the codes from the edit pair, you may find
modifier 59 classified as an informational modifier rather than a payment
modifier. To return to our WPS GHA example, the payer lists modifier 59 as
an
informational modifier
.
One payer’s list of pricing and informational modifiers may not match
another’s list, so medical coders need to stay current on individual payer
policy to avoid incorrect modifier placement that could affect claim
processing.
NCCI modifiers
An NCCI PTP-associated modifier is a modifier that Medicare and Medicaid
accept to bypass an NCCI PTP edit under appropriate clinical circumstances.
Bypassing or overriding an edit is also called unbundling.
Modifier 59, referenced in the previous section, is just one of the modifiers
that can bypass an NCCI edit. Identical NCCI PTP-associated modifier lists are
shown in the
National Correct Coding Initiative Policy Manual for Medicare
Services
available on
CMS’ NCCI edits page
and in the
National Correct
Coding Initiative Manual for Medicaid Services
available on the
Medicaid
NCCI reference documents page
.
Table 1 shows the complete listing of NCCI PTP-associated modifiers. The
categories (Anatomic Modifiers, Global Surgery Modifiers, and Other
Modifiers) are how Medicare and Medicaid divide these modifiers.
Table 1: NCCI PTP-associated modifiers
Modifier
Abbreviated description
Anatomic modifiers
E1-E4
Eyelids
FA, F1-F9
Fingers and thumbs
TA, T1-T9
Toes
LT, RT
Left side and right side of body
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LC, LD, RC, LM, RI
Coronary arteries
Global surgery modifiers
24
Unrelated postoperative evaluation and management (E/M) service
25
Separate E/M on same day as other service
57
Decision for surgery
58
Staged/related postoperative procedure
78
Unplanned postoperative return to the operating room
79
Unrelated postoperative procedure
Other modifiers
27
Multiple same-date outpatient hospital E/M services
59
Distinct procedural service
91
Repeat lab tests
XE, XP, XS, XU
Separate encounter, practitioner, structure, service
While each of these modifiers is important, a few deserve special attention
because they’re among the most used (or misused). Below is an overview of
these modifiers.
NCCI modifier 25: Separate E/M
When a patient has a separate E/M service along with a procedure or other
service on the same day by the same provider, you may report that E/M code
separately for reimbursement by appending modifier 25
Significant,
separately identifiable evaluation and management service by the same
physician or other qualified health care professional on the same day of the
procedure or other service
.
Based on the descriptor, an E/M encounter must meet the criteria below to
qualify for separate reporting using modifier 25.
Significant, separately identifiable E/M service
Many coders find that determining whether an E/M service is significant and
separately identifiable is the most problematic requirement for modifier 25
use. The documentation must clearly show that the provider performed extra
E/M work beyond the usual work required for the other procedure or service
on the same date. In other words, if you removed all the documentation
represented by the code for the other procedure or service, would the
remaining documentation support reporting an E/M code?
Regarding diagnoses for these encounters, the Medicare and Medicaid NCCI
manuals say the diagnosis can be the same for the procedure/service and
separate E/M (both manuals include this in Chapter I.D). Although separate
diagnoses are not required, experienced coders have found that linking one
ICD-10-CM code to the procedure/service code and another ICD-10-CM code
to the E/M code may speed claim processing. The separate ICD-10-CM codes
make the distinct reasons for the E/M and other procedure or service more
obvious. You should report different diagnosis codes, however, only if the
documentation and applicable coding guidelines support doing so.
Same physician or other qualified healthcare professional
To interpret the “same physician” requirement correctly, medical coders
must remember that Medicare follows this rule found in
Medicare Claims
Processing Manual,
Chapter 12
, Section 30.6.5:
Physicians in the same group practice who are in the same specialty must
bill and be paid as though they were a single physician. If more than one
evaluation and management (face-to-face) service is provided on the same
day to the same patient by the same physician or more than one physician in
the same specialty in the same group, only one evaluation and management
service may be reported unless the evaluation and management services are
for unrelated problems. Instead of billing separately, the physicians should
select a level of service representative of the combined visits and submit the
appropriate code for that level.
Same day of the procedure or other service
Determining whether an E/M service occurred on the same date of service as
another procedure or service is typically straightforward. But keep in mind
some points related to Medicare’s global surgery rules.
You may append modifier 25 to an E/M code reported on the same date as a
minor surgical procedure code, which is a code with global period indicator
000 or 010 on the Medicare Physician Fee Schedule (MPFS), according to
Chapter I.E of the Medicare NCCI manual. The manual also states you may
append modifier 25 to an E/M code performed on the same date as a code
with a global indicator of XXX.
Before you report an E/M code on the same date as a procedure code with
indicator 000 (0-day global), 010 (10-day global period), or XXX (global rules
not applicable), consider that those codes include the pre-, intra-, and post-
procedure work involved. You should not report an E/M code for that work,
even with modifier 25 appended.
Medicare also includes the decision to perform a minor surgical procedure in
the procedure code, the NCCI manual states. So, you shouldn’t report a
separate E/M code for that work. When you’re reporting an E/M code
representing the decision to perform a major surgery (one with a 090 global
indicator, which represents a 90-day global period), you should append
modifier 57
Decision for surgery
, and not modifier 25.
Modifier 25 example
Here is an example of when to use modifier 25 based on a scenario
in
Medicare Claims Processing Manual
, Chapter 12, Section 40.1.C. Suppose
the physician sees a patient with head trauma and decides the patient needs
sutures. After checking allergy and immunization status, the physician
performs the procedure. An E/M is not separately reportable in this scenario.
But, if the physician performs a medically necessary full neurological exam
for the head trauma patient, then reporting a separate E/M with modifier 25
appended may be appropriate.
NCCI modifiers 59 and X{EPSU}: Distinct service
Modifier 59
Distinct procedural service
is a medical coding modifier that
indicates documentation supports reporting non-E/M services or procedures
together that you normally wouldn’t report on the same date. Appending
modifier 59 signifies the code represents a procedure or service independent
from other codes reported and deserves separate payment.
Like modifier 25, modifier 59 is difficult to master because it requires
determining whether the code is truly distinct and separately reportable from
other codes. The CPT
®
definition of modifier 59 advises that the modifier may
be appropriate for a code when documentation shows at least one of the
following:
A separate patient encounter or session
A different procedure or surgery
A different anatomic site or organ system
A separate incision/excision
A separate lesion
A separate injury (or area of injury in the case of an extensive injury)
The CPT
®
definition also states that you should not use modifier 59 when a
more descriptive modifier is available. For instance, you may be able to use
anatomic modifiers to demonstrate that procedures occurred at separate
sites on the body.
As an example, the third-quarter 2022 Medicare NCCI PTP edits include the
edit pair 29827
Arthroscopy, shoulder, surgical; with rotator cuff repair
and
29820
Arthroscopy, shoulder, surgical; synovectomy, partial
. The edit has a
modifier indicator of “1,” which means you may bypass the edit in
appropriate clinical circumstances. The
MLN Fact Sheet
“Proper Use of
Modifiers 59 & -X{EPSU}” states you shouldn’t report 29820 (with or without
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59 or X{EPSU} modifiers) “if you perform both procedures on the same
shoulder during the same operative session. If you perform the procedures
on different shoulders, use modifiers RT and LT, not Modifiers 59 or
-X{EPSU}.”
X{EPSU} modifiers
When considering whether to append modifier 59, medical coders must
factor in the so-called X{EPSU} modifiers. These are HCPCS Level II modifiers
that Medicare created as more specific alternatives to modifier 59:
XE: Separate encounter, a service that is distinct because it occurred
during a separate encounter
XP: Separate practitioner, a service that is distinct because it was
performed by a different practitioner
XS: Separate structure, a service that is distinct because it was
performed on a separate organ/structure
XU: Unusual non-overlapping service, the use of a service that is
distinct because it does not overlap usual components of the main
service
In the announcement about the creation of the X{EPSU} modifiers in
2014,
CMS stated
, “Usage to identify a separate encounter is infrequent and
usually correct; usage to define a separate anatomic site is less common and
problematic; usage to define a distinct service is common and not
infrequently overrides the edit in the exact circumstance for which CMS
created the edit in the first place.” The use of the more specific modifiers
shows the reason the service was separate or distinct in a way that modifier
59 does not. This specificity gives auditors, payers, and providers more
information to help them determine which type of reporting is prone to
errors.
Medicare still accepts modifier 59, but check with individual payers to see
which modifiers they prefer for a distinct procedural service.
NCCI Medicare global package modifiers
Modifiers also play an important role in reporting procedures and services
performed during a surgical code’s global period, which is the timeframe
when the global surgical package concept applies.
Medicare’s global surgical package is a policy that incorporates payment in
the surgery code fee for necessary, routine services before, during, and after
a procedure. The policy applies to work performed by same-specialty
members of the same group.
This article has already explained that global period indicators are relevant to
modifier 25 and 57 use. Below are additional modifiers NCCI identifies as
Global Surgery Modifiers, which means the modifiers may allow you to
identify that a service is separately payable even though it occurred during a
surgery’s global period.
Modifier 24: Unrelated E/M
Modifier 24
Unrelated evaluation and management service by the same
physician or other qualified health care professional during a postoperative
period
is appropriate for use only on E/M codes and only for services
unrelated to the original procedure (the one with the global period).
Note that using modifier 24 to report an E/M related to the underlying
disease process may be appropriate. Suppose, for example, that a biopsy
reveals a malignant tumor. The patient returns during the biopsy’s global
period for suture removal and, on the same date, has a distinct E/M visit with
the physician to discuss the diagnosis and treatment options. The work and
time related to suture removal and routine post-biopsy care are not
separately reportable, but you can report the E/M service using modifier 24.
Medicare’s
Global Surgery Booklet
supports this use of modifier 24, stating,
“Treatment for the underlying condition or an added course of treatment
which is not part of normal recovery from surgery” is not included in
Medicare’s global surgical package. The CPT
®
Surgery section guidelines
provide similar wording: “Care of the condition for which the diagnostic
procedure was performed or of other concomitant conditions is not included
and may be listed separately.”
Modifier 58: Staged/related procedure
Another important global package modifier is modifier 58
Staged or related
procedure or service by the same physician or other qualified health care
professional during the postoperative period
.
Medicare’s
Global Surgery Booklet
states that using modifier 58 signifies that
performing a procedure or service during the postoperative period was one
of the following (the CPT
®
code book uses similar language):
Planned prospectively or at the time of the original procedure
More extensive than the original procedure
For therapy following a diagnostic surgical procedure
You should append modifier 58 to the code for the staged or related
procedure. A new postoperative period begins when you report that next
procedure in the series.
Modifier 78: Unplanned return to OR
When the patient returns to the operating or procedure room during the
global period for an unplanned but related procedure, you should append
modifier 78
Unplanned return to the operating/procedure room by the same
physician or other qualified health care professional following initial
procedure for a related procedure during the postoperative period
.
A common use for modifier 78 is to report treatment for complications. The
global surgical package does not include “treatment for postoperative
complications which requires a return trip to the operating room (OR),”
according to
Medicare Claims Processing Manual
, Chapter 12, Section 40.1.B.
The manual goes on to explain that an “OR for this purpose is defined as a
place of service specifically equipped and staffed for the sole purpose of
performing procedures. The term includes a cardiac catheterization suite, a
laser suite, and an endoscopy suite. It does not include a patient’s room, a
minor treatment room, a recovery room, or an intensive care unit (unless the
patient’s condition was so critical there would be insufficient time for
transportation to an OR).”
As Medicare Administrative Contractor (MAC) Palmetto GBA explains in
its
modifier 78 page
, “If the subsequent surgery is related to the initial
surgery but does not require a return to the operating room, and both are
performed by the same surgeon, the subsequent surgery cannot be
submitted separately. The global fee for the initial surgery includes additional
related surgical procedures that do not require a return to the operating
room.”
The CPT
®
Surgery section guidelines are not as specific as the Medicare
global rules regarding the operating/procedure room requirements.
The CPT
®
guidelines state that “complications, exacerbations, recurrence, or
the presence of other diseases or injuries requiring additional services should
be separately reported.” Because rules may differ, medical coders should
check individual payer policies on reporting complications treated during the
global period.
Modifier 79: Unrelated procedure
For unrelated procedures during the postoperative period, the
CPT
®
code
set
provides modifier 79
Unrelated procedure or service by the same
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physician or other qualified health care professional during the postoperative
period
.
Reporting the same code for the initial procedure and the “unrelated”
procedure may be appropriate, as this
example of proper modifier 79
use
shows: Suppose a patient has a right-eye cataract extraction reported
using 66984
Extracapsular cataract removal with insertion of intraocular lens
prosthesis (1 stage procedure), manual or mechanical technique (eg,
irrigation and aspiration or phacoemulsification); without endoscopic
cyclophotocoagulation
. The same patient then has a left-eye cataract
extraction (again, 66984) by the same physician during the global period for
the first procedure. You should append modifier 79 to the code for the second
procedure. Although both procedures require the same code, they are
unrelated because each surgery was on a different eye.
Modifiers on the MPFS
The final group of modifiers covered here relate to the MPFS, which is funded
by Medicare Part B. The MPFS lists fee maximums Medicare uses to pay
physicians and other healthcare professionals on a fee-for-service
basis.
MPFS relative value files
of course include
relative value units (RVUs)
,
but those files also provide information essential to proper use of the
modifiers below for Medicare claims.
Modifiers 26 and TC: Professional and technical components
Medicare (along with many other payers) splits some codes into professional
and technical components. For services like radiologic exams where the
entity performing the test and the interpreting provider are often different,
having separate professional and technical components simplifies reporting
and payment. CPT
®
code 71046
Radiologic examination, chest; 2 views
is an
example of a code that has both professional and technical components.
Using modifier 26
Professional component
allows the provider to claim
reimbursement for the provider’s work, including supervision,
interpretations, and reports. PC is an abbreviation for professional
component, but medical coders must take care not to accidentally append
modifier PC
Wrong surgery or other invasive procedure on patient
in place of
modifier 26.
Modifier TC
Technical component
represents costs like paying technicians
and paying for equipment, supplies, and the space used.
The PCTC IND (PC/TC Indicator) column in the MPFS relative value files
reveals whether a code has a PC/TC split and whether you may append
modifiers 26 and TC to the code. With 10 distinct indicators, medical coders
benefit from referring to a current list of
MPFS modifier indicator
definitions
to ensure they’re using the modifiers correctly.
If a code has both a technical and a professional component and you report
the code without using modifier 26 or TC, you’re claiming that you’ve earned
reimbursement for both components. This type of code with a PC/TC split is
called a global code (not to be confused with the global period and global
surgical package). For codes that accept modifiers 26 and TC, the MPFS RVU
spreadsheet provides RVUs and indicators specific to the global code and the
individual components. The global service rate equals the sum of the rates
for the two components.
Modifier 53: Discontinued procedure
In addition to modifiers 26 and TC, the Medicare relative value files includes
modifier 53
Discontinued procedure
. Four colonoscopy codes (44388, 45378,
G0105, and G0121) have one row for the code and one row for the code with
modifier 53. The reason is that Medicare wants contractors to pay a
consistent amount for those colonoscopy codes with modifier 53 appended.
CPT
®
guidelines state that appending modifier 53 is appropriate when a
patient is scheduled and prepared for a total colonoscopy, but “the physician
is unable to advance the colonoscope to the cecum or colon-small intestine
anastomosis due to unforeseen circumstances.”
Modifier 50: Bilateral procedure
The MPFS includes a BILAT SURG (Bilateral Surgery) column that identifies
how payment will differ if you report the code bilaterally. “Bilateral surgeries
are procedures performed on both sides of the body during the same
operative session or on the same day,” states
Medicare Claims Processing
Manual
, Chapter 12, Section 40.7.
To indicate a procedure was bilateral, it may be appropriate to append
modifier 50
Bilateral procedure
. But as the definition of bilateral indicator “1”
shows, MACs check for multiple ways of reporting bilateral procedures,
including modifier 50, modifiers RT
Right side
and LT
Left side
, or 2 units:
1: 150% payment adjustment for bilateral procedures applies. If the code is
billed with the bilateral modifier or is reported twice on the same day by any
other means (e.g., with RT and LT modifiers, or with a 2 in the units field),
base the payment for these codes when reported as bilateral procedures on
the lower of: (a) the total actual charge for both sides or (b) 150% of the fee
schedule amount for a single code. If the code is reported as a bilateral
procedure and is reported with other procedure codes on the same day,
apply the bilateral adjustment before applying any multiple procedure rules.
Modifier 51: Multiple procedures
The MULT PROC (Multiple Procedure) column in the Medicare relative value
files is connected to modifier 51
Multiple procedures
. However, your MAC
and many other payers may instruct you not to append modifier 51 to codes.
The payer will apply the multiple-procedure fee reduction rules based on the
codes reported and which of the nine possible MULT PROC indicators the fee
schedule assigns to the code.
Consequently, for those payers that do not accept modifier 51, the MULT
PROC column offers information about expected payment rather than about
whether to use modifier 51. As an example of how this column affects
payment, this is Medicare’s definition for multiple-procedure indicator “2”:
2: Standard payment adjustment rules for multiple procedures apply. If
procedure is reported on the same day as another procedure with an
indicator of 1, 2, or 3, rank the procedures by fee schedule amount and apply
the appropriate reduction to this code (100%, 50%, 50%, 50%, 50% and by
report). Base the payment on the lower of (a) the actual charge, or (b) the
fee schedule amount reduced by the appropriate percentage.
Pre-Op, Intra-Op, and Post-Op modifiers
The MPFS splits the work required for a surgery into the PRE OP (Preoperative
Percentage), INTRA OP (Intraoperative Percentage), and POST OP
(Postoperative Percentage) columns, which show how much of the fee each
portion of the surgical work earns in cases where the same provider is not
responsible for every aspect of care.
To alert the payer that different providers are involved, CPT
®
provides these
modifiers:
54: Surgical care only
55: Postoperative management only
56: Preoperative management only
Review payer rules for proper use of these modifiers. For instance, the
Medicare
Global Surgery Booklet
clarifies that modifier 55 is appropriate only
when there has been a transfer of care. You’ll use the surgery date as the
date of service and can only use the modifier if the code has a global period
of 10 days or 90 days.
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Modifiers for multiple surgeons
The MPFS relative value files also include columns to indicate Medicare’s
code-specific policies on modifier use and payment when multiple providers
perform a procedure at the same session.
The CO-SURG (Co-surgeons) column is related to modifier 62
Two surgeons
.
Medicare’s
Global Surgery Booklet
provides these examples:
A procedure requires two physicians of different specialties to perform
it. Each reports the code with modifier 62 appended
Two surgeons simultaneously perform parts of a procedure, such as for
a heart transplant or bilateral knee replacements. Again, each surgeon
reports the code with modifier 62 appended.
The TEAM SURG (Team Surgery) column is connected to modifier 66
Surgical
team
. This modifier is appropriate when more than two surgeons of different
specialties perform a procedure. Each surgeon bills the code with modifier 66
appended.
The ASST SURG (Assistant at Surgery) column provides information related to
these modifiers:
80: Assistant surgeon
81: Minimum assistant surgeon
82: Assistant surgeon (when qualified resident surgeon not available)
AS: Physician assistant, nurse practitioner, or clinical nurse specialist
services for assistant at surgery
The ASST SURG indicator will let you know whether payment for the
additional provider is permitted, not permitted, or possibly permitted if
documentation supports medical necessity.
With modifier 62, the Medicare fee for each co-surgeon is
62.5%
of the global
surgery fee schedule amount. For team surgeons using modifier 66,
the
Global Surgery Booklet
advises that claims must have enough
information to allow the MAC to determine pricing “by report.” For assistant-
at-surgery services by physicians, the Medicare rate is 16% of the surgical
payment. These examples prove yet again that proper use of medical coding
modifiers is essential both for coding precision and for accurate payment.
CPT
®
and HCPCS Level II modifier FAQs
Can you use modifiers on CPT
®
add-on codes?
Modifiers may be appropriate on CPT
®
add-on codes (identified here and in
many coding resources with a +), but you should confirm that the individual
modifier is appropriate for the code you’re reporting. Examples of when it is
appropriate to append a modifier to an add-on code include:
The CPT
®
code set includes add-on code +74248
Radiologic small
intestine follow-through study, including multiple serial images (List
separately in addition to code for primary procedure for upper GI
radiologic examination)
. The MPFS shows that it is appropriate to
append modifier 26
Professional component
or
TC Technical
component
to this code when you are reporting only one of those
components for this service.
Medicare includes some add-on codes in NCCI PTP edit pairs. For
instance, +22845
Anterior instrumentation
; 2 to 3
vertebral
segments
(
List separately in addition to code for primary procedure
) is
a column 2 code for +22853
Insertion of interbody biomechanical
device(s) (eg, synthetic cage, mesh) with integral anterior
instrumentation for device anchoring (eg, screws, flanges), when
performed, to intervertebral disc space in conjunction with interbody
arthrodesis, each interspace (List separately in addition to code for
primary procedure)
in the third-quarter 2022 edits. The edit has a
modifier indicator of “1,” which means you may bypass the edit by
using one or more NCCI PTP-associated modifiers. Note that in many
cases add-on codes are not included in NCCI PTP edits because if an
edit prevents payment of the primary code, the payer also will not
reimburse the add-on code for that primary code. This domino effect
makes an edit for the add-on code unnecessary.
An example of when it’s not appropriate to append a specific modifier to an
add-on code includes:
CPT® guidelines state that you should not use modifier 50 Bilateral
procedure on add-on codes: “When the add-on procedure can be
reported bilaterally and is performed bilaterally, the appropriate add-
on code is reported twice, unless the code descriptor, guidelines, or
parenthetical instructions for that particular add-on code instructs
otherwise. Do not report modifier 50, Bilateral procedures, in
conjunction with add-on codes.”
Can you use CPT
®
modifiers on HCPCS Level II codes and vice versa?
There is no general restriction on using the modifiers from one code
set (CPT)
®
or HCPCS Level II) with the codes from another code set, and such
use is common. Individual modifiers may be appropriate only with certain
codes, so be sure to check the rules specific to the case you’re reporting.
As an example, modifier QW
CLIA waived test
is a HCPCS Level II modifier
that alerts the payer that the test being reported has waived status under
the Clinical Laboratory Improvement Amendments (CLIA). The list of CLIA-
waived tests from CMS provides a long list of CPT
®
lab codes that are
appropriate to report with modifier QW. A handful of HCPCS Level II codes are
included in the list, as well. Because the list changes regularly, you should
search online for updates.
Can you append more than one modifier to a CPT
®
or HCPCS Level II
code?
Appending both CPT
®
and HCPCS Level II modifiers to a single code may be
appropriate. For instance, an encounter may call for both CPT
®
modifier
22
Increased procedural services
and HCPCS Level II modifier LT
Left side
(used to identify procedures performed on the left side of the body)
on one
procedure code.
Claim forms provide space for multiple modifiers. Depending on payer rules,
the number of modifiers required, and the space available, it may be
appropriate to append modifier 99
Multiple modifiers
to the code and then
place additional modifiers in another section of the claim, such as CMS 1500
box 19.
What is the difference between modifier 52 and modifier 53?
Pro-fee coders may consider appending
modifier 52
Reduced services
or
modifier 53
Discontinued procedure
to a medical code when a provider does
not complete the full procedure or service described by that code.
Appendix A of the AMA CPT
®
code book explains that appending modifier 52
to a code is appropriate when provider discretion is the reason for partially
reducing or eliminating a service or procedure.
You should append modifier 53 when the provider terminates a surgical or
diagnostic procedure “due to extenuating circumstances or those that
threaten the well being of the patient,” Appendix A states. You should not
use modifier 53 for elective cancellation of a procedure before anesthesia
induction or surgical preparation in the operating suite.
Outpatient hospitals and ambulatory surgery centers (ASCs) should use
modifier 73
Discontinued out-patient hospital/ambulatory surgery center
(ASC) procedure prior to the administration of anesthesia
and modifier
74
Discontinued out-patient hospital/ambulatory surgery center (ASC)
procedure after administration of anesthesia
for reporting.
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Modifiers 73 and 74 apply only when the procedure is discontinued due to
extenuating circumstances or issues that threaten the wellbeing of the
patient.
When should you use repeat modifiers 76 and 77?
Modifier 76
Repeat procedure or service by same physician or other qualified
health care professional
is appropriate to use when the
same
provider
repeats the procedure or service subsequent to the original
procedure or service. Keep in mind that payers, including Medicare, may
require same-specialty physicians in the same group to bill as if they are a
single physician.
Modifier 77
Repeat procedure by another physician or other qualified health
care professional
is appropriate to use when
a different provider
repeats a
procedure or service subsequent to the original procedure or service.
You should not use either modifier 76 or 77 on an E/M code, according to
Appendix A of the AMA CPT
®
code book.
Individual payers may provide additional guidance. For instance, WPS
Government Health Administrators has a
Modifier 76 Fact Sheet
that clarifies
you should use the modifier for repeat procedures performed on the same
day.
What are the ABN modifiers (GA, GX, GY, GZ)?
An Advance Beneficiary Notice of Noncoverage (ABN) form helps a
beneficiary decide whether to get an item or service that Medicare may not
cover. The
ABN
lets the beneficiary know they may be financially liable if
Medicare denies payment.
ABN claim reporting modifiers are listed in the MLN booklet
Medicare
Advance Written Notices of Noncoverage
with the following explanations:
Modifier GA
Waiver of liability statement issued as required by payer
policy, individual case
Append modifier GA when you issue a mandatory ABN for a service as
required, and the ABN is on file. You do not need to submit a copy of
the ABN to Medicare, but you must have it available on request. Use
modifier GA when both covered and noncovered services appear on an
ABN-related claim.
Modifier GX
Notice of liability issued, voluntary under payer policy
Append modifier GX when you issue a voluntary ABN for a service
Medicare never covers because the service is statutorily excluded or is
not a Medicare benefit. You may use this modifier combined with
modifier GY.
Modifier GY
Item or service statutorily excluded, does not meet the
definition of any Medicare benefit or, for non-Medicare insurers, is not a
contract benefit
Append modifier GY when Medicare statutorily excludes the item or
service, or the item or service does not meet the definition of any
Medicare benefit. You may use this modifier combined with modifier
GX.
Modifier GZ
Item or service expected to be denied as not reasonable and
necessary
Append modifier GZ when you expect Medicare to deny payment of the item
or service because it is medically unnecessary, and you issued no ABN.
Is drug-waste modifier JW only for Medicare?
Modifier JW
Drug amount discarded/not administered to any patient
is not
limited to use for Medicare claims. Other third-party payers also may accept
this HCPCS Level II modifier.
Check payer policy to confirm, but non-Medicare payers may follow
Medicare
rules
. For instance, Medicare states you should use modifier JW only with
drugs designated as single use or single dose on the FDA-approved label or
package insert.
Medicare requires reporting the amount used on one line and the amount
discarded on a second line.
Medicare Claims Processing Manual
, Chapter 17
,
Section 40, provides the example of a single-use vial labeled to contain 100
units that has 95 units administered and 5 units discarded. In that case, you
should report the 95-unit dose on one line. Then report the discarded 5 units
on another line with modifier JW appended to the supply code.
When should you use modifier KX?
Modifier KX
Requirements specified in the medical policy have been met
is
appropriate in a variety of circumstances. In particular, Medicare and some
other payers may accept KX for these types of claims:
Outpatient physical therapy, occupational therapy, or speech language
pathology
Durable medical equipment, prosthetics, orthotics, and supplies
(DMEPOS)
Gender-specific services for patients who are transgender, are intersex,
or have ambiguous genitalia
For instance, on physical therapy claims reported to Medicare, modifier KX
may show that services are medically necessary and reasonable after the
beneficiary has exceeded the defined threshold.
For DMEPOS claims, modifier KX indicates the supplier ensured coverage
criteria was met and that there is documentation to support medical
necessity.
Modifier KX is also appropriate on Part B professional claims to identify
gender-specific services performed on transgender or intersex patients or
those with ambiguous genitalia. The modifier alerts the payer to process the
claim as usual despite any gender-specific edits that may apply.
When should you use hospice modifiers GV and GW?
The hospice modifiers are modifier GV and GW:
GV Attending physician not employed or paid under arrangement by the
patient’s hospice provider
GW Service not related to the hospice patient’s terminal condition
Before appending modifier GV to a code, you should check these points:
The patient is enrolled in a hospice.
The provider is not employed by the hospice.
The provider (physician or nonphysician practitioner) was identified as
the patient’s attending physician when the patient enrolled in hospice.
Medicare Claims Processing Manual
, Chapter 11
, Section 40.1.3, provides
more information about attending physicians for hospice patients. For
instance, the manual states, “When hospice coverage is elected, the
beneficiary waives all rights to Medicare Part B payments for professional
services that are related to the treatment and management of his/her
terminal illness during any period his/her hospice benefit election is in force,
except for professional services of an independent attending physician, who
is not an employee of the designated hospice nor receives compensation
from the hospice for those services.”
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You should use modifier GW when a provider renders a service to a patient
enrolled in a hospice, and the service is not related to the patient’s terminal
condition.
Does Medicare provide information about preventive services
modifier 33?
Modifier 33
Preventive services
is referenced in
Medicare Claims Processing
Manual
, Chapter 18
.
Section 1.2 and Section 60.1.1 both state, “Coinsurance and deductible are
waived for moderate sedation services (reported with G0500 or 99153) when
furnished in conjunction with and in support of a screening colonoscopy
service and when reported with modifier 33. When a screening colonoscopy
becomes a diagnostic colonoscopy, moderate sedation services (G0500 or
99153) are reported with only the PT modifier [
Colorectal cancer screening
test; converted to diagnostic test or other procedure
]; only the deductible is
waived.”
Section 140.8 about advance care planning (ACP) as an element of an annual
wellness visit (AWV) also references modifier 33: “The deductible and
coinsurance for ACP will only be waived when billed with modifier 33 on the
same day and on the same claim as an AWV (code G0438 or G0439), and
must also be furnished by the same provider. Waiver of the deductible and
coinsurance for ACP is limited to once per year. Payment for an AWV is
limited to once per year. If the AWV billed with ACP is denied for exceeding
the once per year limit, the deductible and coinsurance will be applied to the
ACP.”
What is the difference between telemedicine modifiers 95 and GT?
Elements such as payer policy and setting will determine whether you use
modifier 95
Synchronous telemedicine service rendered via a real-time
interactive audio and video telecommunications system
or modifier GT
Via
interactive audio and video telecommunication systems
.
For
Medicare
, professional claims use place of service (POS) 02
Telehealth
to
indicate the service was a telehealth service from a distant site (but see Note
below). Modifier GT is used on institutional claims for distant site services
billed under Critical Access Hospital (CAH) method II.
Other payers may require you to use modifier 95 to indicate the performance
of a telehealth service.
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Note:
Medicare and many other payers implemented temporary rules
related to reporting telehealth codes, modifiers, and POS during the Public
Health Emergency (PHE) related to COVID-19, so be sure to follow the
guidance that applies to your service.
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