HCPCS

The Healthcare Common Procedure Coding System (HCPCS) consists of Level I codes (identical to CPT codes) and Level II alphanumeric codes (A0000–Z9999) for supplies, equipment, and non-physician services. In behavioral health, Level II HCPCS codes occasionally appear for telehealth platforms (e.g. GT modifier, Q3014 for telehealth facility fee) and certain crisis stabilization services. Medicaid billing often requires HCPCS codes not used in commercial billing.