Summary & Overview
CPT 26550: Thumb Reconstruction (Pollicization)
CPT code 26550 represents pollicization or thumb reconstruction by converting a finger (typically the index finger) into a functional thumb. This reconstructive hand surgery is clinically significant nationwide because the thumb contributes disproportionately to hand function and independence; restoration procedures have major implications for patient mobility, function, and long-term care needs. Payers commonly covering such procedures include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise clinical and billing overview, payer coverage context, and practical benchmarks where available for CPT code 26550. The publication outlines clinical intent, typical settings of care, common billing modifiers and administrative considerations, and potential coding relationships. It is intended to inform providers, billing staff, and policy stakeholders about the code’s clinical role, typical utilization settings, and areas where coding clarity and payer policies commonly intersect. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 26550 describes a surgical procedure to create a thumb by rearranging bony and soft tissues from a finger, most commonly the index finger. This operation is performed for patients who lack a native thumb due to congenital absence or traumatic loss.
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Service type: Reconstructive hand surgery involving transfer or conversion of an existing finger to function as a thumb (pollicization).
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Typical site of service: Operating room or specialized ambulatory surgical center with hand surgery capability; inpatient admission may occur depending on patient complexity and perioperative needs.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult or pediatric individual missing a thumb congenitally (e.g., congenital thumb aplasia) or who has lost a thumb due to traumatic injury. The patient presents to a hand surgery clinic for evaluation of functional impairment in pinch and grasp. Preoperative assessment includes history, hand and vascular exam, radiographs of the hand, and discussion of goals of care. The multidisciplinary workflow involves the hand surgeon, anesthesiology, and occupational therapy. The procedure 26550 (pollicization) is performed in an operating room under general anesthesia with sterile technique. The index finger is surgically repositioned, with osteotomy, neurovascular preservation, tendon balancing, and soft-tissue reconstruction to recreate a functional thumb. Postoperative care includes immobilization in a cast or splint, pain control, monitoring of vascular status to the transferred digit, wound checks, and early coordination with hand therapy for range of motion, strengthening, and adaptive training. Typical sites of service are the ambulatory surgery center or hospital operating room. Recovery includes staged occupational therapy visits and periodic surgical follow-up to assess function and possible secondary procedures for refinement.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work, time, or technical difficulty for is substantially greater than usual. |