CPT code 96366: IV infusion add-on hour, therapeutic or diagnostic, each additional hour2026 Medicare rate & RVUs in Washington, DC area

In Washington, DC area, Medicare pays $24.41 for 96366 in the office.

Check a contract rate as a % of Medicare · 96366 nationwide

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

What 96366 covers

This code captures continued IV administration of a therapeutic, prophylactic, or diagnostic drug after the infusion's first hour. Examples include standard infusions of IV antibiotics, iron, and immune globulin. In a physician office or infusion suite, an infusion nurse or other clinical staff typically starts, monitors, and stops the infusion under physician supervision. The substance administered and the service's complexity determine whether this infusion family is appropriate.

Report 96366 with 96365 when an initial drug infusion lasts at least 91 minutes. It can also extend a qualifying sequential infusion reported with 96367 and its required primary administration code. Report one unit for each additional hour that meets the time threshold; a final increment must exceed 30 minutes. Record the start and stop times for each drug, along with its identity, dose, and route. CMS treats 96366 as an add-on paid within the primary procedure's global period, so it cannot be billed alone. As an incident-to service, it is billed only when performed under physician supervision. Report a separately billable drug supply with its appropriate HCPCS code and units.

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.

How Washington, DC area compares for 96366

Across 109 of 109 payment localities, the office rate for 96366 runs from $19.10 in Arkansas to $28.53 in San Benito County, CA. Washington, DC area pays $24.41. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

96366 rates by state

Office rate range in each state. Select a state to see its payment localities.

See 96366 in every payment locality

How the 96366 rate is calculated

Each of 96366’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 96366

The CMS indicators that decide how 96366 is paid alongside other services.

Codes related to 96366

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

How 96366 has changed in Washington, DC area

Price 96366 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

• Washington

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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