CPT code 93308: Echocardiogram, follow-up or limited study2026 Medicare rate & RVUs

Medicare pays $101.20 for 93308 nationally in the office. Local office rates run $88.92–$138.96.

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

What 93308 covers

This service is a focused ultrasound examination of the heart through the chest, using two-dimensional imaging and M-mode when performed. A sonographer typically acquires the images in an office, hospital, or outpatient imaging department, and a qualified physician interprets the study. Common reasons include reassessing a known pericardial effusion or checking ventricular function after a prior study when only a specific question needs evaluation.

Choose this code when the documented examination is limited or performed as follow-up, rather than a complete transthoracic study. The record should support the clinical question, the focused scope of the examination, and the interpretation of the images. Doppler services, when performed and reported, use the applicable Doppler codes. The service may be billed globally, or split into the professional interpretation with modifier 26 and the equipment-and-staff technical component with modifier TC. CMS applies the cardiovascular diagnostic multiple procedure reduction 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.

Where 93308 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

93308 rates by state

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

How the 93308 rate is calculated

Each of 93308’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 93308

The CMS indicators that decide how 93308 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93308 compared with similar codes

How to choose

93307Transthoracic echoComplete, without Doppler

93307 represents a complete transthoracic examination without Doppler. Choose 93308 when the study is limited or a follow-up focused on a specific question.

93306Echocardiogram (TTE)Complete, with spectral and color Doppler

93306 represents a complete transthoracic examination with Doppler and color flow imaging. 93308 describes a limited or follow-up study, with Doppler services represented separately when performed.

93304Transthoracic echoCongenital, limited or follow-up

93304 is the limited or follow-up transthoracic study for congenital cardiac disease; 93308 is used for the corresponding non-congenital study.

Codes related to 93308

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