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FAQ (Frequently Asked Questions)
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Q:   What modifiers should we be using for billing insurance claims?

A: Ambulatory Surgical Center, modifier SG should be billed only for ASC services (not x-rays, injections, etc.)

Physician Assistants and Nurse Practitioners should bill modifier 81.

Multiple surgeries should bill - 51.
Bilateral surgeries should bill - 50
Professional component - 26
Separately identifiable services - 25
Unusual procedural service - 22
Post-surgical follow up visits no related to surgery - 24
Returned trip to operating room - 78
Unrelated procedure by same physician during post-operative period - 79
Decision for surgery made within a global surgical period - 57
Staged procedure - 58

AA Anesthesia performed by anesthesiologist
AD Supervised by physician, > 4 concurrent anesthesia procedures
AE Direction of residents/interns NOT > 2 concurrent
AF Anesthesia complicated by total body hypothermia
AG Anesthesia for emergency surgery

AH Psychiatric services by clinical psychologist
AJ Psychiatric services by Clinical Social Worker

AK Nurse practitioner team member services
AL Nurse practitioner, non-rural, team member

AM Physician team member service
AN Physician Assistant services for other than assistant-at-surgery,
non-team member outpatient

AP No refraction - for use with certain vision services

AS Physician Assistant services for assistant-at-surgery

AT Acute treatment (USED WITH 98940 ONLY)

AU Nurse practitioner, team member
AV Nurse practitioner, rural setting, non-team member

CC Procedure code changed by carrier

EJ EPO - Subsequent claim
EM ERSD method II emergency rescue supply (for ERSD benefit
only)
ET Emergency treatment - dental procedures only

E1 Upper left, eyelid
E2 Lower left, eyelid
E3 Upper right, eyelid
E4 Lower right, eyelid

FA Left hand, thumb
F1 Left hand, second digit
F2 Left hand, third digit
F3 Left hand, fourth digit
F4 Left hand, fifth digit

F5 Right hand, thumb
F6 Right hand, second digit
F7 Right hand, third digit
F8 Right hand, fourth digit
F9 Right hand, fifth digit

GA Waiver of liability statement on file

GC Service performed by resident under direction of teaching
physician
GE Service performed by resident without the presence of a teaching
physician

G1 Most recent URR reading of less than 60
G2 Most recent URR reading of 60 to 64.9
G3 Most recent URR reading of 65 to 69.9
G4 Most recent URR reading of 70 to 74.9
G5 Most recent URR reading of 75 or >

KO Single drug unit dose formulation
KP First drug of a multiple drug unit dose formulation

LC Left anterior descending coronary artery
LD Left circumflex coronary artery

LR Laboratory round trip

LS Food and Drug Administration monitor intraocular lens implant

LT Left side of body

PL Progressive addition lens

QB Physician providing a service in a rural HPSA

QC Single channel monitoring
QD Recording and storage in solid state memory by a digital recorder

QH Anesthesia - Medical direction of own employees
QK Medical direction of 2, 3 or 4 concurrent anesthesia procedures
involving qualified individuals

QP Documentation on file for profile codes 80049 - 80092
QR Repeat clinical DX lab test on the same day, separate specimens
taken

QS Monitored anesthesiology

QT Recording and storage on tape by an analog tape recorder

QU Physician providing a service in an urban HPSA

QW CLIA waived test

QX Anesthesia - CRNA with medical direction by a physician
QZ Anesthesia - CRNA without medical direction by a physician

Q3 Live kidney donor. Services related with post operative
complications directly related to donation

Q4 Lab ownership exception

Q5 Service furnished by a substitute physician under a reciprocal
billing arrangement

Q6 Service furnished by LOCUM TENENS physician

Q7 One class A finding

Q8 Two class B findings

Q9 One class B and class C findings

RC Right coronary artery

RT Right side of the body

TA Left foot, great toe
T1 Left foot, second digit
T2 Left foot, third digit
T3 Left foot, fourth digit
T4 Left foot, fifth digit

T5 Right foot, great toe
T6 Right foot, second digit
T7 Right foot, third digit
T8 Right foot, fourth digit
T9 Right foot, fifth digit

TC Technical component

VP Aphakic patient

WC Chronic condition (used with CHIROPRACTIC services only)

WE Nurse practitioner team visit, rural area

WU Technical component - purchased test

XC Acute manifestation of chronic condition (used with procedure
A2000 only)

XO Live donor

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