Summary & Overview
HCPCS L5636: Lower Extremity Symes Medial Opening Socket
HCPCS Level II code L5636 denotes an addition to a lower extremity prosthesis for a Symes (ankle disarticulation) amputation, specifically a medial opening socket. Nationally, this code matters for billing and coverage of prosthetic socket components used in limb loss care and rehabilitation. Appropriate coding ensures accurate claims for prosthetic fabrication, fitting, and modification services that support mobility and function for patients with Symes-level amputations.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for Symes prosthetic sockets, typical sites of service where this component is provided, and the payer landscape relevant to reimbursement and prior authorization practices. The publication summarizes common billing modifiers and payer considerations (listed separately), typical utilization contexts, and where to find policy guidance.
This summary provides clinicians, prosthetists, and billing professionals a concise reference for the code's clinical meaning, expected service settings, and which major national payers commonly cover such prosthetic components. Data not available in the input is noted where applicable in later sections.
Billing Code Overview
HCPCS Level II code L5636 describes an addition to a lower extremity prosthesis for a Symes type amputation, specifically a medial opening socket. This code represents a component or modification used in the prosthetic socket for patients with a Symes (ankle disarticulation) amputation of the lower limb.
Service Type: Prosthetic component / socket modification
Typical Site of Service: Prosthetics clinic, orthotics and prosthetics (O&P) facility, or ambulatory surgical/procedural setting for socket fitting and adjustments
Clinical & Coding Specifications
Clinical Context
A 58-year-old male with a transtibial amputation at the Syme (distal tibial) level presents to a prosthetics clinic for fitting and customization of his new prosthetic socket. The clinician prescribes a medial opening Symes-type lower extremity socket component to accommodate residual limb anatomy and facilitate donning. The workflow includes a prosthetist evaluation, cast or digital scan of the residual limb, socket fabrication with the L5636 addition for a medial opening Symes socket, fitting appointment, dynamic alignment, and follow-up adjustments. Typical sites of service are an outpatient prosthetics clinic, orthopedic specialty clinic, or an ambulatory surgery center if any minor surgical revisions or shaping procedures are required prior to definitive fitting. The patient’s care team may include a prosthetist, physiatrist or orthopedic surgeon, physical therapist, and durable medical equipment (DME) supplier. Insurance payors commonly involved in authorization and reimbursement include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Used when the prosthetic addition is for the left lower extremity. |