Summary & Overview
HCPCS L5971: Lower Extremity Prosthesis SACH Foot, Replacement Only
HCPCS Level II code L5971 represents replacement of a solid ankle cushion heel (SACH) prosthetic foot for lower extremity amputees. This code identifies a common, low-technology prosthetic foot component used to restore basic gait and mobility; it matters nationally because prosthetic component classification affects coverage determinations, payment policies, and access to durable medical equipment and prosthetic services across commercial and public payers. Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn what L5971 captures clinically and operationally, the typical sites of service where replacements occur, and what to expect in payer coverage discussions. The publication provides benchmark-focused context, highlights policy considerations that influence authorization and reimbursement, and outlines clinical implications for prosthetic service delivery. Where available, it summarizes common billing modifiers and service-line implications; when specific payer policies are unavailable, the text notes that data are not provided. This resource is intended for billing managers, prosthetists, clinical staff involved in prosthetic care, and policy analysts seeking a concise national overview of this prosthetic foot replacement code.
Billing Code Overview
HCPCS Level II code L5971 describes an all lower extremity prosthesis, solid ankle cushion heel (SACH) foot, replacement only. The service type is prosthetic component replacement intended specifically for the lower extremity. The typical site of service is prosthetics/orthotics clinics, outpatient prosthetic services, or other ambulatory settings where prosthetic devices are fitted and replaced.
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Clinical & Coding Specifications
Clinical Context
A 58-year-old male transtibial amputee presents to the prosthetics clinic for replacement of a worn prosthetic foot. The patient ambulates in the community with a transtibial prosthesis and reports progressive deterioration of gait stability and increased distal limb discomfort attributable to a degraded solid ankle cushion heel (SACH) foot. The prosthetist evaluates the socket fit and alignment during an in-person visit, confirms that the socket and pylons are serviceable, and documents that only the foot component requires replacement. The clinic schedules a device-only replacement visit: the prosthetist removes the old L5971 SACH foot, verifies compatibility with the existing pylon and adapter, fits the replacement foot, assesses alignment and prosthetic length, and provides gait training and patient education. Billing is submitted for the prosthetic component replacement using L5971, with the appropriate modifier to indicate whether the item is new, a replacement, or other special circumstance. Typical sites of service are an outpatient prosthetics/orthotics clinic, hospital-based prosthetics department, or specialty rehabilitation clinic. Typical payors include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA (Behavioral and Unspecified Commercial Administrator), and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 |