CPT code 93981: Penile duplex, limited study2026 Medicare rate & RVUs

Medicare pays $73.48 for 93981 nationally in the office. Local office rates run $64.69–$99.98.

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

What 93981 covers

This service uses duplex ultrasound to assess blood flow in penile vessels, such as when evaluating erectile dysfunction for evidence of impaired arterial inflow or venous outflow. Urologists, radiologists, or vascular laboratory personnel may perform the study, often in an office or imaging setting. A vasoactive medication may be injected into the corpora cavernosa during diagnostic testing, with the ultrasound findings interpreted in that clinical context.

Select the limited-study code when the documented examination is focused or incomplete rather than a complete assessment of penile arterial inflow and venous outflow. The record should identify the indication, the vessels or flow findings assessed, and the reason the study was limited. Report the professional interpretation with modifier 26 and the equipment-and-staff portion with modifier TC; without a modifier, the claim represents the global service. The cardiovascular diagnostic 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.

Where 93981 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

93981 rates by state

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

How the 93981 rate is calculated

Each of 93981’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 93981

The CMS indicators that decide how 93981 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

93981 compared with similar codes

How to choose

93980Penile vascular studyComplete inflow and outflow

Both codes assess penile vascular flow, but 93980 is selected for a complete examination of arterial inflow and venous outflow; 93981 is for a limited study.

93975Vascular duplexComplete organ inflow and outflow

This code concerns a complete duplex assessment of abdominal, pelvic, or scrotal contents. Choose 93981 when the vessels assessed are penile.

93976Vascular duplexLimited abdominal, pelvic, or scrotal study

This code concerns a limited duplex assessment of abdominal, pelvic, or scrotal contents. The penile vessel target distinguishes 93981.

Codes related to 93981

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