Summary & Overview
CPT 26135: MCP Joint Synovectomy with Extensor Hood Reconstruction
CPT code 26135 represents a surgical synovectomy of the metacarpophalangeal (MCP) joint with division of intrinsic muscles and reconstruction of the extensor hood for each affected digit. The procedure addresses destructive synovitis and extensor mechanism dysfunction, commonly in patients with rheumatoid arthritis, and is performed by hand surgeons in ambulatory surgical centers, hospital outpatient departments, or inpatient operating rooms. Nationally, this code matters because it captures a specialized reconstructive hand surgery with implications for surgical utilization, specialty reimbursement, and access to orthopedic and plastic hand care.
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 CPT code 26135, payer coverage considerations, and how the procedure is billed per digit. The publication outlines typical service settings and the clinical indications associated with the code. It also highlights common modifiers and payer considerations when available. Any missing input elements are noted as unavailable in the input. The content is intended for national audiences including policy analysts, revenue cycle leaders, and surgical specialists seeking a clear summary of the code, clinical scope, and billing context.
Billing Code Overview
CPT code 26135 describes a surgical procedure in which the provider removes the synovial membrane over the metacarpophalangeal (MCP) joint of a finger, divides intrinsic hand muscles, and reconstructs the extensor hood tissue. This operation is performed on each affected digit separately and is commonly used for patients with rheumatoid arthritis or other conditions causing destructive synovitis and extensor mechanism dysfunction.
Service type: Hand surgery — synovectomy with extensor hood reconstruction
Typical site of service: Hospital outpatient department or ambulatory surgical center; may also occur in an inpatient surgical setting depending on clinical complexity and comorbidities.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 55-year-old with long-standing rheumatoid arthritis who presents with pain, swelling, and limited extension at the metacarpophalangeal (MCP) joint of the index finger. Conservative care (medical therapy, splinting, steroid injections, and hand therapy) failed to relieve synovitis and mechanical extensor hood dysfunction. After preoperative evaluation and informed consent, the patient is scheduled for an outpatient hand surgery.
The clinical workflow: preoperative assessment in the clinic with medication reconciliation and optimization for rheumatoid disease; surgical day arrival to the ambulatory surgery center or hospital outpatient department; regional block or general anesthesia; surgical synovectomy of the MCP joint, division of intrinsic tight bands, and reconstruction of the extensor hood on the affected digit; intraoperative hemostasis and dressing application; brief observation in PACU; discharge with written postoperative instructions, hand therapy referral, and short-term analgesics. The procedure is billed per digit using 26135 and documentation includes operative note describing synovial removal, intrinsic release, and extensor hood reconstruction, laterality, and any intraoperative complications.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
50 | Bilateral procedure | When identical procedure is performed on both hands/digits (rare for single-digit code; use only if payer allows bilateral modifier with per-digit codes). |