LEVEL II Modifiers

AA   Anesthesia services performed by anesthesiologist
AE   Service rendered by nutrition professional /registered dietician
AF   Service rendered by a speciality physician
AG   Service rendered by a primary care physician
AH   Service rendered by a clinical psychologist
AK   Service rendered by nonparticipating physician
AQ   Physician providing a service in a Health Professional Shortage Area (HPSA)
AR   Services Furnished within a Physician Scarcity Area (PSA)
BL   Purchased blood
CA   Inpatient only procedure
CB   Lab not included in ESRD composite rate (ESRD/SNF)
CR   Catastrophe/Disaster Related
E1   Upper left, eyelid
E2   Lower left, eyelid
E3   Upper right, eyelid
E4    Lower right, eyelid
FA   Left hand, thumb
FB    Item Provided without cost to Provider, Supplier or Practitioner
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