Summary & Overview
CPT 26490: Opponensplasty, Tendon Transfer to Restore Thumb Opposition
CPT code 26490 denotes opponensplasty, a surgical tendon-transfer procedure to restore thumb opposition and improve pinch and grip. Nationally, this code is relevant to hand surgeons, rehabilitation teams, and payers because opponensplasty addresses functional loss from nerve injury, tendon rupture, or chronic deformity and can substantially affect patient independence and occupational outcomes. Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise clinical description, typical sites of service, and payer coverage context. The publication outlines benchmark elements such as usual settings for delivery (ambulatory surgical centers and hospital operating rooms), common billing and coding considerations, and clinical context for when opponensplasty is performed. It also summarizes typical modifiers and payer considerations where available and identifies gaps where input data is not provided. This resource is intended to help clinicians, coding professionals, and policy analysts quickly understand the purpose of CPT code 26490, the clinical scenarios it serves, and the payer landscape that affects authorization and billing workflows.
Billing Code Overview
CPT code 26490 describes opponensplasty, a surgical tendon transfer procedure performed to restore thumb opposition — the ability of the thumb to move across the palm and oppose the fingertips. The procedure involves transferring a donor tendon to recreate the muscle function that allows the thumb to oppose the fingers, improving pinch and grip.
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Service type: Surgical tendon transfer for restoration of hand function
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Typical site of service: Ambulatory surgical center or hospital operating room
Clinical & Coding Specifications
Clinical Context
A 48-year-old right-hand-dominant mechanic presents with loss of thumb opposition after a median nerve injury sustained in a motorcycle crash six months prior. Conservative management, including splinting and occupational therapy, failed to restore functional opposition and pinch. The hand surgeon evaluates strength, then schedules an opponensplasty to restore thumb opposition by transferring a donor tendon (commonly the palmaris longus, flexor digitorum superficialis of the ring finger, or extensor indicis proprius) to recreate opposition and improve pinch and grasp. The procedure is typically performed in an ambulatory surgery center or hospital operating room under regional block with sedation or general anesthesia. Intraoperative steps include harvest and preparation of the donor tendon, creation of a pulley or pathway, tensioning and fixation to the abductor/opponens insertion, and wound closure. Postoperative workflow includes short recovery in PACU, splinting to protect the transfer, and early coordinated hand therapy to mobilize the transfer and re-educate thumb opposition over weeks to months. Typical documentation includes preoperative consent, operative note detailing tendon donor, fixation method, laterality, estimated blood loss, anesthesia type, and postoperative therapy plan.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Use when the procedure is performed on the left thumb/opponent mechanism |