Summary & Overview
CPT 64721: Median Nerve Neuroplasty/Transposition for Carpal Tunnel Syndrome
CPT code 64721 denotes neuroplasty or transposition of the median nerve at the carpal tunnel, a surgical treatment for carpal tunnel syndrome (CTS) that relieves compression of the median nerve beneath the transverse carpal ligament. This procedure matters nationally because CTS is a common cause of hand numbness and functional impairment, and surgical intervention represents a significant portion of hand surgery and outpatient surgical volumes.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and payer coverage considerations. The publication also outlines benchmarks and utilization patterns where available, relevant coding considerations for billing teams, and recent policy updates that affect coverage and prior authorization for peripheral nerve procedures.
The report is designed for clinicians, billing professionals, and policy analysts seeking a clear reference on CPT code 64721: what the code represents, where the service is typically provided, which major payers are relevant, and what operational issues commonly arise in coding and reimbursement for median nerve neuroplasty or transposition procedures.
Billing Code Overview
CPT code 64721 describes neuroplasty or transposition of the median nerve at the carpal tunnel performed to treat carpal tunnel syndrome (CTS). The procedure addresses compression of the median nerve beneath the transverse carpal ligament in the wrist, often related to inflammation of the nine flexor tendons that pass through the carpal tunnel.
Service type: Surgical — peripheral nerve decompression/transposition of the median nerve
Typical site of service: Hospital outpatient surgical suite or ambulatory surgery center
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 52-year-old right-hand dominant administrative assistant presents with a 9-month history of progressive numbness, tingling, and nocturnal hand paresthesias affecting the thumb, index, and long fingers of the right hand with decreased grip strength and intermittent dropping of objects. Conservative care including wrist splinting and a short course of oral corticosteroids provided only temporary relief. Nerve conduction studies confirm moderate median nerve compression across the carpal tunnel. The surgeon schedules an operative neuroplasty/transposition of the median nerve at the carpal tunnel (CPT 64721) under regional block with monitored anesthesia care in an ambulatory surgery center. The clinical workflow includes preoperative evaluation, informed consent documenting risks/benefits of neuroplasty versus simple release, preoperative marking, intraoperative carpal tunnel exposure and neuroplasty/transposition, hemostasis, layered closure, and routine postoperative instructions with a follow-up visit for wound check and hand therapy referral as indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Used when billing only the surgeon’s professional service separate from facility charges. |
50 | Bilateral procedure | Applied when both left and right median nerve neuroplasties/transpositions are performed during the same operative session.