CPT code 93985: Dialysis access mapping, complete bilateral study2026 Medicare rate & RVUs in Washington, DC area

In Washington, DC area, Medicare pays $289.92 for 93985 in the office.

Check a contract rate as a % of Medicare · 93985 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 93985 covers

This duplex ultrasound maps vessels relevant to hemodialysis access on both sides, assessing arterial inflow and the veins and access-related anatomy needed for planning. A vascular sonographer typically acquires the images in a vascular laboratory or imaging department; a qualified physician, such as a radiologist or vascular specialist, interprets the study. It is commonly performed before choosing a site for a dialysis fistula or graft.

Report 93985 for a complete bilateral mapping examination, supported by documentation of the clinical need and the vessels and sides examined. The code is already priced as bilateral, so modifier 50 does not increase payment. The global service is billed without a component modifier; modifier 26 identifies the interpretation, and modifier TC identifies the technical service. When multiple cardiovascular diagnostic procedures are performed, the multiple procedure reduction applies to the technical component.

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 Washington, DC area compares for 93985

Across 109 of 109 payment localities, the office rate for 93985 runs from $215.76 in Arkansas to $345.51 in San Benito County, CA. Washington, DC area pays $289.92. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

93985 rates by state

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

See 93985 in every payment locality

How the 93985 rate is calculated

Each of 93985’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 93985

The CMS indicators that decide how 93985 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

Codes related to 93985

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

How 93985 has changed in Washington, DC area

Price 93985 for an earlier date of service

Where the Washington, DC area rate applies

Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.

• Washington

Browse all communities in District of Columbia

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