Summary & Overview
CPT 26477: Extensor Tendon Shortening of Hand or Finger
CPT code 26477 denotes a surgical tendon-shortening procedure on the extensor tendon of a hand or finger to correct an elongated tendon causing joint instability. This procedural code captures a targeted corrective surgery that addresses functional impairment and instability in small-joint mechanisms of the hand, making it relevant to both specialty surgical care pathways and musculoskeletal surgical quality measurement nationally.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context for use of the code, typical settings where the service is delivered, and the operational elements that affect billing and claims submission. The publication outlines common modifiers and coding considerations, summarizes expected sites of service, and provides benchmarking and policy context where available.
Intended for practice managers, coding professionals, and policy analysts, the content helps stakeholders understand where CPT code 26477 fits within hand surgery services, what to expect in claims processing, and which payer audiences commonly manage such claims. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 26477 describes a surgical procedure to shorten an extensor tendon of the hand or finger. The goal of the procedure is to correct an elongated extensor mechanism that produces joint instability by reducing tendon length to restore balanced tendon tension and improve joint function.
Service Type: Tendon shortening procedure (hand/finger)
Typical Site of Service: Ambulatory surgical center or hospital operating room, performed by a hand surgeon or orthopedic/plastic surgeon with expertise in hand procedures.
Clinical & Coding Specifications
Clinical Context
A 48-year-old right-hand-dominant patient presents with progressive radial drift and extensor tendon imbalance of the long finger after a remote mallet-type injury and chronic extensor tendon elongation. The patient reports difficulty with active extension at the proximal interphalangeal joint and intermittent triggering of the extensor tendon with functional tasks. Conservative management including splinting and occupational therapy has failed to restore stable active extension.
In the clinic workflow, the hand surgeon documents history, focused physical exam demonstrating extensor lag and dorsal subluxation/instability at the affected joint, and obtains plain radiographs to exclude bony malalignment. After informed consent, the patient is scheduled for operative tendon shortening/reefing. In the operating room under regional or general anesthesia, the surgeon performs a dorsal incision, isolates the elongated extensor tendon, shortens or imbricates the tendon to restore appropriate tension, and verifies smooth gliding and joint stability. Postoperative documentation includes the tendon procedure, laterality, anesthesia type, implants if any, estimated blood loss, and a plan for hand therapy and splinting for rehabilitation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Use when the procedure is performed on the left hand or finger |