Modifier Description   Effective
AUItem furnished in conjunction with a urological, ostomy, or tracheostomy supplyJan 01, 2003
AVItem furnished in conjunction with a prosthetic device, prosthetic or orthoticJan 01, 2003
AWItem furnished in conjunction with a surgical dressingJan 01, 2003
AXItem furnished in conjunction with dialysis servicesJan 01, 2003
AYItem or service furnished to an esrd patient that is not for the treatment of esrdJan 01, 2011
AZPhysician providing a service in a dental health professional shortage area for the purpose of an electronic health record incentive paymentJan 01, 2011
BAItem furnished in conjunction with parenteral enteral nutrition (pen) servicesJan 01, 2003
BLSpecial acquisition of blood and blood productsJul 01, 2005
BOOrally administered nutrition, not by feeding tubeJan 01, 2003
BPThe beneficiary has been informed of the purchase and rental options and has elected to purchase the itemJan 01, 1997
BRThe beneficiary has been informed of the purchase and rental options and has elected to rent the itemJan 01, 1997
BUThe beneficiary has been informed of the purchase and rental options and after 30 days has not informed the supplier of his/her decisionJan 01, 1997
CAProcedure payable only in the inpatient setting when performed emergently on an outpatient who expires prior to admissionJan 01, 2003
CBService ordered by a renal dialysis facility (rdf) physician as part of the esrd beneficiary's dialysis benefit, is not part of the composite rate, and is separately reimbursableJan 01, 2004
CCProcedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)Jan 01, 1997
CDAmcc test has been ordered by an esrd facility or mcp physician that is part of the composite rate and is not separately billableJan 01, 2004
CEAmcc test has been ordered by an esrd facility or mcp physician that is a composite rate test but is beyond the normal frequency covered under the rate and is separately reimbursable based on medical necessityJan 01, 2004
CFAmcc test has been ordered by an esrd facility or mcp physician that is not part of the composite rate and is separately billableJan 01, 2004
CGPolicy criteria appliedJul 01, 2008
CH0 percent impaired, limited or restrictedJan 01, 2013
CIAt least 1 percent but less than 20 percent impaired, limited or restrictedJan 01, 2013
CJAt least 20 percent but less than 40 percent impaired, limited or restrictedJan 01, 2013
CKAt least 40 percent but less than 60 percent impaired, limited or restrictedJan 01, 2013
CLAt least 60 percent but less than 80 percent impaired, limited or restrictedJan 01, 2013
CMAt least 80 percent but less than 100 percent impaired, limited or restrictedJan 01, 2013