Summary & Overview
HCPCS L5570: Preparatory Above-Knee Prosthetic with Ischial Socket and Pylon
HCPCS Level II code L5570 represents a preparatory above-knee prosthetic assembly for knee disarticulation or ischial-level sockets configured as a non-alignable system with a pylon, no cover, a SACH foot, and a thermoplastic or equivalent, direct-formed fabrication. This code is relevant nationally for prosthetic providers, payers, and facilities that supply lower-limb prostheses as it defines a specific prosthetic component set and fabrication method used for early or preparatory fittings.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for L5570, the typical site of service, and what the code denotes in terms of materials and assembly. The publication outlines benchmarking considerations, billing and coding points of attention, and the payer mix that commonly reimburses this category of preparatory transfemoral prostheses.
The content provides practical reference material for coding teams, prosthetists, and revenue cycle staff seeking to align documentation and billing with the clinical description of the prosthetic system. Data not available in the input is noted where applicable and omitted from technical sections.
Billing Code Overview
HCPCS Level II code L5570 describes a preparatory, above knee - knee disarticulation, ischial level socket, non-alignable system with pylon, no cover, sach foot, and a thermoplastic or equivalent, direct formed fabrication. This describes a preparatory prosthetic assembly for individuals with transfemoral-level or knee-disarticulation amputations that uses a non-alignable socket and pylon-mounted foot.
Service Type: Prosthetic limb component fabrication and fitting
Typical Site of Service: Outpatient prosthetics clinic or specialized orthotics & prosthetics facility
Clinical & Coding Specifications
Clinical Context
A 58-year-old male with a chronic, nonhealing ischemic wound and severe infection of the distal femur following failed attempts at limb salvage presents for prosthetic preparation after an above-knee amputation at the knee disarticulation level. The orthotist/prosthetist performs a preparatory, direct-formed, thermoplastic above-knee socket (ischial level), non-alignable system with a pylon and SACH foot for interim ambulation prior to definitive fitting. The clinical workflow includes: pre-fitting evaluation of residual limb shape and skin integrity, measurement and casting or direct thermoplastic forming, fitting and alignment of the non-alignable pylon and SACH foot, patient gait training and education, and follow-up visits for adjustments. Services are typically provided in an outpatient prosthetics clinic or a rehabilitation facility with access to physical therapy. Relevant payors include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare for coverage determination and prior authorization processes.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default or not used for Medicare-specific reports | Rarely appended; use per payer instruction when no modifier applies |
11 |