Medicare 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
-GA Waiver of liability statement (ABN) on file with ABN waiver signed
-GY item or service statutorily excluded, does not meet the definition of any Medicare benefit
or for non-Medicare insurance, is not a contract benefit No need to get ABN waiver
-GZ item or service expected to be denied as not reasonable and necessary