A Modifiers

A1

Dressing for one wound

A2

Dressing for two wounds

A3

Dressing for three wounds

A4

Dressing for four wounds

A5

Dressing for five wounds

A6

Dressing for six wounds

A7

Dressing for seven wounds

A8

Dressing for eight wounds

A9

Dressing for nine or more wounds

AA

Anesthesia services performed personally by anesthesiologist

AD

Medical supervision by a physician: more than four concurrent anesthesia procedures

AE

Registered dietician

AF

Specialty physician

AG

Primary physician

AH

Clinical psychologist

AI

Principal physician of record

AJ

Clinical social worker

AK

Non participating physician

AM

Physician, team member service

AO

Alternate payment method declined by provider of service

AP

Determination of refractive state was not performed in the course of diagnostic ophthalmological examination

AQ

Physician providing a service in an unlisted health professional shortage area (hpsa)

AR

Physician provider services in a physician scarcity area

AS

Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery

AT

Acute treatment (this modifier should be used when reporting service 98940, 98941, 98942)

AU

Item furnished in conjunction with a urological, ostomy, or tracheostomy supply

AV

Item furnished in conjunction with a prosthetic device, prosthetic or orthotic

AW

Item furnished in conjunction with a surgical dressing

AX

Item furnished in conjunction with dialysis services

AY

Item or service furnished to an esrd patient that is not for the treatment of esrd

AZ

Physician providing a service in a dental health professional shortage area for the purpose of an electronic health record incentive payment