CPT code 78099: Unlisted endocrine test, nuclear medicine2026 Medicare rate & RVUs in Connecticut

CMS doesn’t publish a rate for 78099 in Connecticut.

Check a contract rate as a % of Medicare · 78099 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 78099 covers

78099 identifies an unlisted endocrine diagnostic nuclear medicine procedure: a study in this service area that lacks a specific listed code describing what was performed. It is not the selection for a thyroid uptake, thyroid imaging, parathyroid planar imaging, parathyroid imaging with SPECT and CT, or adrenal cortex-and-medulla imaging service when a corresponding specific code describes the procedure. These specific services are represented by nearby codes such as 78012, 78013, 78014, 78070, 78071, 78072, and 78075.

Medicare assigns 78099 physician fee schedule status C (carrier priced): CMS publishes no national payment, and the Medicare Administrative Contractor sets payment for each claim. The diagnostic test has professional and technical components. Modifier 26 identifies interpretation, while modifier TC identifies the equipment-and-staff portion. Billing without either modifier represents the global service. Select the reporting form that matches the portion furnished.

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 Connecticut compares for 78099

Every other payment area

78099 rates by state

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

See 78099 in every payment locality

How the 78099 rate is calculated

Each of 78099’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 78099

The CMS indicators that decide how 78099 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

Codes related to 78099

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

How 78099 has changed in Connecticut

Price 78099 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

• Ansonia
• Ball Pond
• Baltic
• Bantam
• Bethel
• Bethlehem Village
• Bigelow Corners
• Blue Hills

Browse all communities in Connecticut

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