CPT code 93455: Coronary angiography, with bypass graft imaging2026 Medicare rate & RVUs

Medicare pays $979.31 for 93455 nationally in the office. Local office rates run $853.12–$1,322.27.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 93455 covers

This service evaluates the native coronary arteries and surgically created bypass grafts using catheter-based contrast injections and imaging. It is commonly performed by a cardiologist in a cardiac catheterization laboratory when a patient with prior coronary artery bypass surgery needs diagnostic assessment of coronary blood flow or graft patency. Aortography may be included when performed as part of the graft assessment.

Report 93455 when the documented study includes coronary angiography and bypass graft angiography, without adding a left-heart catheterization service. The procedure report should identify the vessels and grafts studied, the imaging performed, and the interpreting physician’s findings. Medicare recognizes professional interpretation and technical services separately with modifiers 26 and TC; billing without either modifier represents the global service. The code has a 0-day global period, so same-day preoperative and postoperative care is included. For multiple procedures in one session, the highest-valued procedure is paid in full and others at 50%. Assistant-at-surgery payment requires documented medical necessity; 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.

Where 93455 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

93455 rates by state

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

How the 93455 rate is calculated

Each of 93455’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 93455

The CMS indicators that decide how 93455 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93455 compared with similar codes

How to choose

93454Coronary angiographyWithout graft or left-heart catheterization

93454 covers coronary angiography without bypass graft imaging. Choose 93455 when the documented study also images bypass grafts.

93457Cardiac catheterizationRight heart, coronaries, bypass grafts

93457 includes right-heart catheterization in addition to coronary and bypass graft angiography. 93455 does not include that right-heart study.

93459Cardiac catheterizationLeft heart with bypass grafts

93459 includes left-heart catheterization along with coronary and bypass graft angiography. Use 93455 when the documented service does not include left-heart catheterization.

Codes related to 93455

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

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