Summary & Overview
HCPCS L3935: Finger Orthosis, Custom Fabricated, Nontorsion Joint
HCPCS Level II code L3935 identifies a custom-fabricated finger orthosis with a nontorsion joint, including any soft interface and necessary fitting and adjustment. This durable medical equipment code is used nationally to bill for device fabrication and clinical services that restore or protect finger function after injury, surgery, or progressive hand conditions. The code matters because custom finger orthoses can affect patient outcomes, device cost, and coverage decisions across commercial and public payers.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical intent of the code, typical sites of service, and the service type. The publication also covers payer coverage considerations, common modifiers, and related billing practices where data are available. Additionally, it provides benchmarking context and notes on administrative factors that influence utilization and reimbursement for custom finger orthoses.
This summary is designed for clinicians, billing professionals, and policy analysts seeking a national overview of HCPCS Level II code L3935, its clinical role, and the administrative elements that commonly accompany claims for custom finger orthoses. Data not available in the input are identified where relevant.
Billing Code Overview
HCPCS Level II code L3935 describes a custom-fabricated finger orthosis with a nontorsion joint, which may include a soft interface and includes fitting and adjustment. The item is intended to support or immobilize one or more fingers following injury, surgery, or chronic conditions affecting digital stability or function.
Service type: Custom orthotic fabrication and fitting
Typical site of service: Outpatient orthotics or prosthetics clinic, hand therapy clinic, or hospital outpatient department
Clinical & Coding Specifications
Clinical Context
A 46-year-old patient presents to an outpatient hand therapy clinic after surgical repair of a zone II flexor tendon laceration to the index finger. The hand surgeon prescribes a custom fabricated finger orthosis to protect the repair while allowing controlled mobilization. The orthotist/hand therapist performs an initial evaluation, fabricates a custom nontorsion joint finger orthosis (L3935) using thermoplastic material and a soft interface, fits the device, and provides patient education on wear schedule and skin checks. Follow-up visits include adjustments and documentation of wound status, range-of-motion progression, and modifications to the orthosis as swelling decreases. Typical sites of service include outpatient hospital-based hand clinics, independent outpatient orthopedic or rehabilitation clinics, and specialized durable medical equipment (DME) supplier facilities that provide on-site custom fabrication and fitting.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Applied when the orthosis is for the left finger |
RT | Right side |