Summary & Overview
CPT 26492: Opponensplasty, Tendon Transfer with Graft to Restore Thumb Opposition
CPT code 26492 represents opponensplasty, a surgical tendon transfer with graft performed to restore thumb opposition — a critical hand function for grasp and fine motor tasks. This procedure matters nationally because it addresses functional impairment from nerve injury, tendon dysfunction, or sequelae of trauma or disease that limit activities of daily living. Reimbursement and coverage policies for reconstructive hand surgery influence access to timely care and multidisciplinary rehabilitation.
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 the types of documentation and coding considerations commonly associated with surgical tendon transfer procedures. The publication provides benchmarks and payment context where available, outlines relevant policy updates affecting coverage and site-of-service considerations, and summarizes clinical factors that affect coding and utilization, such as indications for tendon transfer and expected postoperative courses.
This national-level overview is intended for coding professionals, surgical and rehabilitation clinicians, and policy analysts seeking clear, practice-focused information about CPT code 26492, its clinical role, and the payer landscape affecting access and reimbursement for opponensplasty procedures.
Billing Code Overview
CPT code 26492 describes an opponensplasty procedure in which the provider augments a tendon by transfer and with a graft to restore thumb opposition. Thumb opposition is the ability of the thumb to move across the palm and oppose the other fingertips to enable grasp and fine motor function.
Service type: Surgical tendon transfer with graft for restoration of thumb opposition
Typical site of service: Hospital outpatient department or ambulatory surgery center, and occasionally an inpatient surgical setting for complex reconstructions or when medical comorbidities require hospitalization.
Clinical & Coding Specifications
Clinical Context
A 46-year-old right-hand dominant patient presents with loss of thumb opposition following a traumatic median nerve injury sustained in an industrial accident six months prior. The patient reports inability to oppose the thumb to the fingertips, decreased pinch strength, and difficulty performing activities of daily living such as buttoning and grasping small objects. Prior conservative management included occupational therapy and tendon gliding exercises without functional recovery. Preoperative evaluation includes focused hand history and physical exam demonstrating impaired thenar muscle function, electrodiagnostic testing confirming chronic median nerve palsy, and imaging as needed to assess tendon and soft tissue status. The operative plan is 26492 opponensplasty with tendon transfer and graft augmentation under regional or general anesthesia, performed in an ambulatory surgery center or hospital outpatient setting. Intraoperative steps include harvest of a donor tendon (commonly extensor indicis proprius or flexor digitorum superficialis), transfer and routing to recreate thumb opposition, graft augmentation as required, tensioning, and layered closure. Postoperative workflow includes immobilization in a thumb spica orthosis, early supervised occupational therapy for protected range of motion and gradual strengthening, and routine follow-up visits to monitor healing and regain functional opposition.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 |