CPT code 64466: Thoracic block, unilateral injection2026 Medicare rate & RVUs in Colorado

In Colorado, Medicare pays $147.18 for 64466 in the office and $61.53 when it’s performed in a hospital or facility.

Check a contract rate as a % of Medicare · 64466 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 64466 covers

This code describes an anesthetic injection into a fascial plane in the thoracic region on one side. An anesthesiologist or other qualified clinician may perform the block for chest-wall pain control around breast or thoracic surgery. The operative or anesthesia record should identify the side, target plane, injection technique, and clinical purpose so the service can be distinguished from a thoracic paravertebral block or a catheter infusion.

Report 64466 for the unilateral injection service, not for a continuous infusion through a catheter; the latter has a separate family code. The 0-day global period includes same-day preoperative and postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. CMS identifies bilateral payment at 150% with modifier 50; the family also has a separate bilateral injection code, 64468, so select the descriptor that matches the service. Assistant-at-surgery payment is restricted, and co-surgeons and team surgery are not permitted.

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 Colorado compares for 64466

Across 109 of 109 payment localities, the office rate for 64466 runs from $127.21 in Arkansas to $184.27 in San Benito County, CA. Colorado pays $147.18. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

64466 rates by state

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

See 64466 in every payment locality

How the 64466 rate is calculated

Each of 64466’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 64466

The CMS indicators that decide how 64466 is paid alongside other services.

What modifiers do to the payment

When to use modifier 50

Codes related to 64466

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

How 64466 has changed in Colorado

Price 64466 for an earlier date of service

Where the Colorado rate applies

Colorado is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in Colorado. Some span more than one payment area; confirm with the service ZIP.

• Acres Green
• Aetna Estates
• Aguilar
• Air Force Academy
• Akron
• Alamosa
• Alamosa East
• Allenspark

Browse all communities in Colorado

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