Billing and Coding: Transcatheter Infusion Therapy

This billing and coding guidance for transcatheter infusion therapy specifies that CPT codes 61650, 61651, and 37202 may be billed for medically necessary intra-arterial infusions, with strict documentation and place-of-service rules for certain diagnoses (e.g., cerebrovasospasm, GI hemorrhage, non-occlusive mesenteric ischemia, Raynaud's). Key limits: only one unit of 61650 per service, 61650/61651 and 37202 reimbursable only once per encounter regardless of medication count or infusion duration, and chemotherapy/embolism/thrombolysis must be coded separately; claims require valid ICD‑10 codes, appropriate ABN handling (GA/GX/GZ/GY), and supporting medical documentation including medication, times, route, vessel, and signed notes.

"Transcatheter infusion therapy (report with CPT 61650, 61651, or 37202 as appropriate) is covered when medically necessary to treat vascular conditions requiring intra-arterial medication infusion."