Summary & Overview
CPT 26518: Stabilization of Metacarpophalangeal/Proximal Interphalangeal Joints
CPT code 26518 represents a surgical stabilization procedure for instability of the finger joints in three or four digits, involving capsular incision and tightened reattachment to the metacarpal and proximal phalanx. This code is clinically significant because it captures a specific reconstructive hand surgery that affects care pathways, facility use, and surgical quality reporting at a national level. Understanding billing and classification for this procedure informs provider documentation, surgical planning, and payer adjudication.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and common billing modifiers. The publication outlines benchmarks and coding considerations relevant to surgical service lines, identifies where additional clinical detail is typically required for accurate coding, and highlights policy and reimbursement topics that commonly affect hand surgery billing. The summary also notes where source input lacked data and directs readers to available sections for payer-specific guidance and related code mappings. This national-level briefing is intended for coding professionals, surgical providers, and revenue cycle stakeholders seeking a focused reference on CPT code 26518.
Billing Code Overview
CPT code 26518 describes a surgical procedure to address joint instability in three or four digits between the metacarpals and proximal phalanges. The procedure involves incising the joint capsule and reattaching it with increased tension to stabilize the metacarpal and phalanx.
-
Service type: Surgical repair of hand/finger joint instability
-
Typical site of service: Ambulatory surgical center or hospital operating room
Data not available in the input for payers, taxonomies, and ICD-10 diagnoses.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 45-year-old manual laborer presenting with chronic lateral instability of the metacarpophalangeal joints of the index, middle, and ring fingers after a work-related crush injury and failed conservative care (splinting, physical therapy). Symptoms include recurrent subluxation, pain with grip, and loss of hand function. Examination demonstrates increased passive joint laxity and pain at the metacarpophalangeal joint lines. Imaging (AP and lateral hand radiographs, and sometimes MRI) excludes major fractures but shows capsular attenuation. The clinical workflow includes preoperative evaluation, informed consent, regional or general anesthesia in an ambulatory surgery center or hospital outpatient department, surgical capsulorrhaphy of three or four digits via dorsal or volar approach (CPT 26518), intraoperative neurovascular and tendon assessment, wound closure, postoperative splinting, and early hand therapy for range of motion and strengthening. Typical sites of service are an ambulatory surgery center or hospital outpatient department. Payors commonly involved include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | When the procedure is performed on the left hand |