CPT code 01999: Unlisted anesthesia, no listed procedure-specific code2026 Medicare rate & RVUs in Arizona

CMS doesn’t publish a rate for 01999 in Arizona.

Check a contract rate as a % of Medicare · 01999 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 01999 covers

CPT 01999 is used for anesthesia furnished with a surgical or other procedural service when no listed anesthesia code describes the service. It is not tied to a particular body region or anesthetic technique; the underlying procedure may involve any site. An anesthesiologist or CRNA reports the anesthesia service, while the clinician performing the intervention reports that procedure under its own code.

Choose a listed anesthesia code whenever it describes the service; 01999 is not a substitute for codes covering procedures such as nerve blocks, interventional radiology, or delivery. The anesthesia record should identify the intervention, site, technique, anesthesia personnel, and start and end times; the operative or procedure report should describe the intervention and its extent, with documentation explaining why no listed anesthesia code fits. Medicare calculates payment as (base units + time units) × the locality’s anesthesia conversion factor. Report anesthesia time in minutes; CMS converts it to 15-minute units to one decimal place, from preparation until the practitioner is no longer in personal attendance and the patient can safely be placed under postoperative care.

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 Arizona compares for 01999

Every other payment area

01999 rates by state

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

See 01999 in every payment locality

How the 01999 rate is calculated

Each of 01999’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 01999

01999 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.

Codes related to 01999

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

How 01999 has changed in Arizona

Price 01999 for an earlier date of service

Where the Arizona rate applies

Arizona is a Medicare payment area, not a city. Our Census mapping connects it to 467 cities and communities in Arizona. Some span more than one payment area; confirm with the service ZIP.

• Aguila
• Ajo
• Ak Chin
• Ak-Chin Village
• Alamo Lake
• Ali Chuk
• Ali Chukson
• Ali Molina

Browse all communities in Arizona

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