CPT code 45342: Sigmoidoscopy, ultrasound-guided tissue sampling2026 Medicare rate & RVUs in Colorado

In Colorado, Medicare pays $152.89 for 45342 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 45342 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 45342 covers

This procedure combines flexible examination of the rectum and sigmoid colon with endoscopic ultrasound imaging and needle aspiration or biopsy of a target. Gastroenterologists commonly use it to sample a subepithelial rectal or sigmoid lesion, or a nearby structure, when routine mucosal forceps biopsy may not reach the target. It is typically performed in an endoscopy suite, hospital outpatient department, or ambulatory surgery center.

Report 45342 when the endoscopic ultrasound is used to guide needle tissue sampling; documentation should identify the target and show that ultrasound guidance and sampling were performed. A standard mucosal biopsy without ultrasound-guided needle sampling is a different service. CMS assigns a 0-day global period, so same-day preoperative and postoperative care is included. When related endoscopies are performed together, endoscopy family pricing applies. Modifier 50 is inappropriate for this service. Medicare does not pay an assistant at surgery, 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 45342

Across 109 of 109 payment localities, the facility rate for 45342 runs from $139.83 in Arkansas to $197.60 in Alaska. Colorado pays $152.89. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

45342 rates by state

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

See 45342 in every payment locality

How the 45342 rate is calculated

Each of 45342’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 45342

The CMS indicators that decide how 45342 is paid alongside other services.

What modifiers do to the payment

When to use modifier 51

Codes related to 45342

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

How 45342 has changed in Colorado

Price 45342 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