Summary & Overview
CPT 51792: Electromyography of Anal or Urethral Sphincter Muscles
CPT code 51792 denotes an electrophysiological study that records electrical activity in the anal or urethral sphincter muscles. This diagnostic procedure is clinically important for evaluating neuromuscular disorders of the pelvic floor, guiding treatment decisions for urinary and fecal incontinence, pelvic pain syndromes, and neurogenic bladder or sphincter dysfunction. Nationally, sphincter electromyography contributes to diagnostic precision in urology, colorectal surgery, and pelvic floor medicine.
Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context and service settings, typical sites of service, and the types of information this code conveys for patient management and billing workflows. The publication summarizes common modifiers and notes where input data is unavailable.
This resource provides clinicians, billing professionals, and policy analysts with a clear reference for CPT code 51792, including what the code represents, why it matters in care pathways for pelvic floor disorders, and which major payers typically cover such diagnostic services. Data not available in the input is clearly identified so readers understand limitations.
Billing Code Overview
CPT code 51792 describes a diagnostic procedure that measures the electrical activity of the anal or urethral sphincter muscles. This electrophysiological study of the sphincter complex is used to assess neuromuscular function of the pelvic floor sphincters.
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Service type: Diagnostic neuromuscular testing
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Typical site of service: Ambulatory surgical center, hospital outpatient department, or specialized urology/colorectal clinic where electrodiagnostic testing is performed
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Clinical & Coding Specifications
Clinical Context
A 56-year-old patient with refractory fecal incontinence is referred to a colorectal specialist for evaluation. The patient reports urgency, involuntary stool leakage, and impaired quality of life despite conservative measures (pelvic floor therapy, dietary changes, and medications). The clinician plans neurophysiologic testing to assess pudendal nerve and sphincter muscle function. In clinic, the patient is consented and prepped; surface or concentric needle electrodes are placed in the external anal sphincter and/or urethral sphincter depending on symptoms. The procedure 51792 (anal or urethral sphincter electromyography) is performed to measure electrical activity at rest and with contraction, and to detect denervation, reinnervation, or myopathic changes. Findings are documented in the procedure note, and results are used to guide further management such as pelvic floor rehabilitation, neuromodulation (sacral nerve stimulation), or referral to urology/colorectal surgery.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician/interpretive portion of the test when the technical component is billed by another entity. |
TC |