HCPCS Level II code J7501 represents administration billing for azathioprine, parenteral, 100 mg, a systemic immunosuppressive medication provided as an injectable or intravenous formulation; the service type is therapeutic drug administration and the typical site of service is outpatient infusion centers, hospital outpatient departments, or clinic-based injection suites.

For related coverage guidance, see recent payer policy updates: Epithelial Cell Cytology in Breast Cancer Risk Assessment, Antibody-Drug Conjugates, Chemotherapy Observation or Inpatient Hospitalization (for New Mexico Only).