CPT code 94664: Inhaler training, technique demonstration and evaluation2026 Medicare rate & RVUs

Medicare pays $20.04 for 94664 nationally in the office. Local office rates run $16.99–$28.29.

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

What 94664 covers

This service involves teaching a patient how to use an aerosol delivery device or watching the patient use it to evaluate technique. The clinician may correct errors such as poor coordination with a metered-dose inhaler or improper handling of a nebulizer. It is commonly provided in an office or other setting where respiratory care is delivered, by a physician or appropriately supervised clinical staff.

Report the service for device-use instruction or technique evaluation, not simply because an inhaled medication was administered. Documentation should identify the device, the instruction or evaluation performed, and relevant findings about the patient's technique. CMS treats 94664 as an incident-to service: it may be billed only when performed under physician supervision.

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 94664 pays more and less

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

109 of 109 payment localities

94664 rates by state

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

How the 94664 rate is calculated

Each of 94664’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 94664

The CMS indicators that decide how 94664 is paid alongside other services.

94664 compared with similar codes

How to choose

94640Inhalation treatmentAcute obstruction or sputum induction

94640 represents an inhalation treatment. 94664 represents device-use demonstration or evaluation, which must be separately performed and documented.

94660CPAP managementInitiation and management

94660 concerns CPAP initiation and management; 94664 concerns a patient's use of an aerosol delivery device such as an inhaler or nebulizer.

94644Continuous inhalationFirst hour

94644 represents continuous inhalation treatment. Choose 94664 when the service is device instruction or technique evaluation rather than continuous treatment.

Codes related to 94664

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