CPT code 00300: Head and neck anesthesia, skin, muscle, and nerve procedures2026 Medicare rate & RVUs

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

What 00300 covers

This service covers anesthesia for operations involving skin, muscles, or nerves in the head, neck, or posterior trunk. Typical cases include removal or repair of skin lesions on the scalp, face, or back, and surgery involving muscles or nerves in these regions. An anesthesiologist or CRNA provides and reports the anesthesia service in settings such as a hospital operating room or ambulatory surgery center; the surgeon reports the operation separately.

Choose this code for the specified tissues and regions, rather than 00320 for other neck procedures or the more specific categories for thyroid needle biopsy, larynx or trachea surgery in a child under one year, or major neck-vessel surgery. The operative report should identify the site, tissue, and procedure, while the anesthesia record supports the service and its minutes. This code has 5 base units; Medicare payment is (base units plus time units) multiplied by the locality’s anesthesia conversion factor. Time runs from when anesthesia preparation begins until personal attendance ends and the patient can safely be placed under postoperative care; CMS converts minutes into 15-minute time units to one decimal place, and the conversion factor varies by locality.

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 00300 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

00300 rates by state

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

How the 00300 rate is calculated

Each of 00300’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 00300

00300 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

00300 compared with similar codes

How to choose

00320Neck anesthesiaAge one or older

00300 covers skin, muscle, or nerve procedures in the listed regions. 00320 covers other neck procedures assigned to that anesthesia category.

00322Thyroid biopsy anesthesiaNeedle biopsy only

Use 00322 for anesthesia during a thyroid needle biopsy; 00300 is for the specified skin, muscle, or nerve procedures.

00326Airway anesthesiaLarynx or trachea, under 1 year

00326 is for larynx or trachea surgery in a child under one year, not the procedures covered by 00300.

00350Neck vascular anesthesiaMajor-vessel procedures

00350 is for major-vessel surgery in the neck. 00300 applies to procedures on skin, muscles, or nerves in its covered regions.

Codes related to 00300

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