CPT code 88360: Tumor IHC scoring, manual quantitative, per antibody2026 Medicare rate & RVUs in Colorado

In Colorado, Medicare pays $126.31 for 88360 in the office.

Check a contract rate as a % of Medicare · 88360 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 88360 covers

This service includes immunohistochemical staining of tumor tissue and a pathologist's manual quantitative or semiquantitative assessment, rather than a qualitative interpretation alone. Common uses in breast carcinoma include estrogen and progesterone receptor scoring, HER2 membrane scoring on a 0 to 3+ scale, and the Ki-67 proliferation index. Hospital and independent pathology laboratories perform the staining; a pathologist assesses the stained cells at the microscope on a biopsy or resection specimen.

Report one unit for each single-antibody stain procedure scored manually on each separately evaluated specimen. If computer-assisted image analysis performs the quantitation, report 88361 instead. Do not add a qualitative IHC code for the same antibody stain procedure; qualitative stains using other antibodies may be reported separately when supported. Documentation should identify the specimen, antibody, manual scoring method, and result. CMS prices professional and technical components separately: modifier 26 identifies the pathologist's interpretation, modifier TC identifies the staining and other technical work, and the unmodified code represents both components when furnished by one billing entity.

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 88360

Across 109 of 109 payment localities, the office rate for 88360 runs from $106.97 in Arkansas to $163.58 in San Benito County, CA. Colorado pays $126.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

88360 rates by state

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

See 88360 in every payment locality

How the 88360 rate is calculated

Each of 88360’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 88360

The CMS indicators that decide how 88360 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

Codes related to 88360

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

How 88360 has changed in Colorado

Price 88360 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