Summary & Overview
HCPCS L5560: Preparatory Above-Knee (Ischial Level) Prosthetic Socket System
HCPCS Level II code L5560 denotes a preparatory above-knee prosthetic socket system for knee disarticulation to ischial-level amputations, built as a non-alignable assembly with pylon, no cover, SACH foot, and a plaster socket molded to model. This code identifies interim prosthetic fabrication and fitting services that facilitate early mobility and prosthetic training during the rehabilitation continuum. Nationally, preparatory prostheses are important for early functional recovery, gait training, and for informing definitive prosthetic design.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for use of L5560, typical sites of service, and the kinds of services it represents. The publication summarizes payer coverage scope and common modifier usage patterns where applicable, and provides benchmarks and policy context relevant to prosthetic durable medical equipment billing and reimbursement nationally.
This analysis clarifies the service line (prosthetics fabrication and fitting), clinical implications for patients with knee disarticulation or high transfemoral amputations, and what stakeholders can expect when encountering HCPCS Level II code L5560 on claims. Data not available in the input is noted where applicable elsewhere in the publication.
Billing Code Overview
HCPCS Level II code L5560 describes a preparatory prosthetic device intended for an above-knee (knee disarticulation to ischial level) socket system. The description specifies a non-alignable system with a pylon, no cover, SACH foot, and a plaster socket molded to model, indicating a preparatory or interim prosthesis built to fit a residual limb following knee disarticulation or at the ischial level.
Service Type: Prosthetic fabrication and fitting — preparatory/temporary above-knee prosthesis
Typical Site of Service: Prosthetics/orthotics clinic, prosthetist's workshop, outpatient rehabilitation facility, or hospital prosthetics service
Clinical & Coding Specifications
Clinical Context
A 56-year-old male with a history of chronic peripheral arterial disease and prior traumatic injury presents for fabrication of an above-knee prosthetic preparatory (temporary) socket following a knee disarticulation. The patient has a well-healed residual limb at the knee-disarticulation level and is medically stable for prosthetic fitting. The prosthetist performs a plaster cast molding to create an ischial-level, non-alignable preparatory socket with a pylon and SACH foot for initial ambulation training. The workflow includes an initial evaluation by a prosthetist, diagnostic casting or model creation, fabrication of the preparatory plaster socket, alignment and attachment of a pylon and SACH foot, fitting session to check comfort and suspension, and delivery with gait training planned in outpatient rehabilitation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier / default | Use when no specific modifier applies to the service. |
11 | Primary procedure | Apply when this prosthetic preparatory device is the primary billed prosthetic service for the date of service. |