Summary & Overview
CPT 26844: Carpometacarpal Joint Fusion, Non-Thumb Digit
CPT code 26844 represents surgical fusion of a carpometacarpal joint for a digit other than the thumb, typically performed to relieve pain, instability, or degenerative disease by immobilizing the joint and promoting bone union often with autologous bone graft. This operative procedure is an important component of hand surgery care nationally because it affects functional outcomes, rehabilitation needs, and episodic surgical spending for upper-extremity disorders. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of clinical context and typical settings for this procedure, plus summary benchmarks and payment considerations relevant to major national payers. The publication covers coding specificity for CPT code 26844, expected sites of service (ambulatory surgical center or hospital operating room), and the role of autologous bone grafting and optional internal fixation in defining the service. The material highlights areas that influence reimbursement and utilization, such as operative complexity and postoperative care requirements. Data not available in the input is noted where relevant, and the report focuses on national implications for clinicians, billing professionals, and policy analysts.
Billing Code Overview
CPT code 26844 describes a surgical carpometacarpal joint fusion for a digit other than the thumb. The procedure involves surgically immobilizing the carpometacarpal joint, often using bone graft harvested from the patient to induce fusion; internal fixation devices may or may not be used. A carpometacarpal joint is where a digit’s metacarpal bone meets a carpal bone of the wrist.
Service type: Surgical — hand/upper extremity orthopedic procedure
Typical site of service: Ambulatory surgical center or hospital operating room, depending on clinical complexity and facility resources.
Clinical & Coding Specifications
Clinical Context
A 52-year-old patient presents with chronic pain and instability at the carpometacarpal (CMC) joint of the ring finger after prior traumatic injury and progressive degenerative change. Conservative measures (splinting, activity modification, steroid injection) failed to relieve pain and restore function. After diagnostic evaluation including wrist and hand radiographs showing joint space loss and subluxation at the digit CMC joint, the hand surgeon schedules surgical arthrodesis of the affected digit CMC joint using bone graft harvested from the distal radius or iliac crest and internal fixation as needed.
The perioperative workflow includes preoperative clearance and informed consent, pre-op imaging and templating, general or regional anesthesia, intraoperative arthrodesis of the non‑thumb CMC joint with graft placement and possible hardware fixation, immediate postoperative immobilization in a splint or cast, and routine postoperative follow-up for wound check, radiographic assessment of fusion, and hand therapy to restore range of motion and strength in adjacent joints.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Rarely used on claims; placeholder when no modifier applies |
11 |