CPT code 51784: Sphincter EMG, nonneedle technique2026 Medicare rate & RVUs

Medicare pays $66.47 for 51784 nationally in the office. Local office rates run $59.61–$85.33.

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

What 51784 covers

This test records electrical activity from the anal or urinary sphincter muscles without needle electrodes. In urology and urogynecology practices, a clinician or trained staff member typically places surface electrodes near the perineum or anal sphincter and records muscle activity during rest, contraction, or voiding. It can help assess sphincter coordination in patients with urinary incontinence, difficulty emptying the bladder, or suspected pelvic floor dysfunction, often as part of a broader urodynamic evaluation.

Report the study when nonneedle sphincter electromyography is performed; use the needle-study code when needle electrodes are used. Documentation should identify the muscle area studied, the nonneedle technique, the test findings, and the interpretation. CMS allows billing for the professional interpretation with modifier 26, the equipment and staff portion with modifier TC, or the global service without either modifier. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard 50% multiple procedure reduction.

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 51784 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

51784 rates by state

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

How the 51784 rate is calculated

Each of 51784’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 51784

The CMS indicators that decide how 51784 is paid alongside other services.

What modifiers do to the payment

When to use modifier 26

51784 compared with similar codes

How to choose

51785Sphincter EMGNeedle electrode technique

Both codes describe anal or urinary sphincter electromyography. Choose 51784 for a nonneedle technique and 51785 when needle electrodes are used.

51726CystometrogramElectronic pressure-volume testing

51726 measures bladder pressure and capacity during complex cystometry; 51784 records sphincter muscle electrical activity.

51741UroflowmetryComplex electronic flow study

51741 measures urinary flow and its pattern. It does not represent the sphincter electromyography service reported with 51784.

Codes related to 51784

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