CPT code 96373: Injection administration, intra-arterial route2026 Medicare rate & RVUs in California

Medicare pays $20.96–$26.23 for 96373 in the office in California, from Chico, CA to San Benito County, CA. Which amount applies depends on the service address.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 96373 covers

This service represents administration of a therapeutic, prophylactic, or diagnostic substance directly into an artery. In a physician office, a physician or clinical staff member may perform the injection as part of treatment or a diagnostic service. The defining feature is the intra-arterial route, including administration through an arterial access device when the drug is injected into the artery; the code describes the administration, not the access device itself.

Select the code based on the documented route and injection service, not the drug name, dose, or reason for treatment alone. The record should identify the substance, the intra-arterial route, the clinical purpose, and who performed the injection. For Medicare, when the service is furnished as an incident-to service, it is billed only when performed under physician supervision. This code is not an infusion-time measure; document the injection performed rather than elapsed infusion time.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 96373 pays more and less in California

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

29 of 29 payment localities

How the 96373 rate is calculated

Each of 96373’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 96373

The CMS indicators that decide how 96373 is paid alongside other services.

96373 compared with similar codes

How to choose

96372SC/IM injectionTherapeutic, prophylactic, or diagnostic

Use 96372 for subcutaneous or intramuscular administration. Use 96373 when the injection is intra-arterial.

96374IV pushSingle or initial IV push

96374 describes an intravenous push; 96373 describes an injection into an artery. The documented route determines the choice.

96365IV drug infusionInitial, first hour

96365 is for an initial intravenous infusion. 96373 is for an intra-arterial injection, not an infusion selected by duration.

Codes related to 96373

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates