HCPCS modifier › A codes › AT
AT
Acute treatment (this modifier should be used when reporting service 98940, 98941, 98942)
ValidHCPCS Level II modifier.
Valid for claims with a date of service in the current code year.
HCPCS modifier › A codes › AT
ValidHCPCS Level II modifier.
Valid for claims with a date of service in the current code year.