Summary & Overview
HCPCS L2340: Addition to Lower Extremity Pre-Tibial Shell, Molded to Patient Model
HCPCS Level II code L2340 identifies a custom-molded addition to the lower extremity pre-tibial shell, used as part of orthotic management for patients requiring a patient-specific lower leg component. This durable medical equipment code matters nationally because it governs coverage, billing, and clinical documentation for custom orthotic devices that affect mobility, fall risk, and rehabilitation outcomes.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coverage considerations across major payers, common billing modifiers, and the clinical context for use of a pre-tibial shell addition. The publication summarizes typical sites of service, documentation essentials tied to medical necessity, and crosswalks to related orthotic services.
This resource provides benchmarks and policy-relevant updates where available, clarifies the service line and typical clinical indications for the device, and highlights areas where payers commonly require supporting documentation. Data not available in the input is identified explicitly where relevant.
Billing Code Overview
HCPCS Level II code L2340 describes an addition to lower extremity, pre-tibial shell, molded to patient model. This item is a custom-molded orthotic component intended for the lower leg (pre-tibial region) and is fabricated from a patient-specific model to ensure fit and function.
Service Type: Custom lower extremity orthotic addition
Typical Site of Service: Outpatient orthotics or prosthetics clinic, durable medical equipment supplier, or specialty rehabilitation setting
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with peripheral neuropathy and progressive pre-tibial skin breakdown presents to an orthotics clinic for a custom lower-extremity orthotic. The clinician assesses gait instability, focal pressure over the anterior distal tibia, and footwear-related irritation. A patient-specific pre-tibial shell is indicated to offload the anterior tibial area and protect the pretibial skin. The workflow includes: a clinical evaluation by a prosthetist/orthotist, casting or 3D scanning of the lower leg to create a patient model, fabrication of a molded pre-tibial shell, a fitting visit to adjust contours and fit within the shoe or brace, and documentation of medical necessity, measurements, and patient tolerance. Typical sites of service include orthotics/prosthetics clinics, outpatient rehabilitation centers, and hospital-based orthotics labs.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | When the addition applies to the left lower extremity |
RT | Right side | When the addition applies to the right lower extremity |