Summary & Overview
HCPCS L1755: Legg Perthes Orthosis, Custom-Fabricated
HCPCS Level II code L1755 identifies a custom-fabricated Legg Perthes orthosis (patten bottom type), a specialized lower-extremity device used to support the hip in pediatric patients with Legg-Calvé-Perthes disease or related conditions. Nationwide, this orthotic has clinical importance for preserving hip joint congruity, controlling femoral head positioning, and supporting gait and function during growth and healing phases. Coverage and coding for custom orthoses influence access to this specialized care and bear on utilization and durable medical equipment administration.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns, common billing practices, coding considerations for custom-fabricated orthoses, and clinical context for use of L1755.
Readers will learn: the clinical indication and device description for L1755, typical sites where the orthosis is delivered, common documentation elements needed for medical necessity determinations, and how coverage policies and billing practices affect procurement and patient access. Where specific payer policy details or benchmark metrics are not provided in the input, the report will note that data is not available in the input and focus on general national policy and clinical context.
Billing Code Overview
HCPCS Level II code L1755 describes a Legg Perthes orthosis, (patten bottom type), custom fabricated. This orthosis is a custom-fabricated lower-extremity device designed to support and stabilize the hip and femoral head in patients with Legg-Calvé-Perthes disease or similar pediatric hip conditions.
Service type: Orthotic device — custom fabricated lower-extremity hip orthosis
Typical site of service: Outpatient orthotics/prosthetics clinic, specialty orthotics center, or hospital outpatient department
Clinical & Coding Specifications
Clinical Context
A 7-year-old child presents to a pediatric orthopedic clinic with hip pain and an antalgic gait. Imaging confirms Legg‑Calvé‑Perthes disease with femoral head ischemia and collapse requiring containment bracing. An orthotist and pediatric orthopedist collaborate: the orthopedist documents medical necessity, prescribes a custom‑fabricated Legg Perthes orthosis, and submits L1755 for fabrication. The orthotist performs measurements, creates a patten‑bottom custom device to control femoral head position, schedules fitting, adjusts alignment, and provides caregiver education on wear schedule and skin checks. Follow-up visits with the orthopedist occur periodically to monitor hip development and adjust or replace the orthosis as the child grows. Durable medical equipment suppliers coordinate prior authorization with payors and use appropriate modifiers for billing events such as professional component, multiple procedure indicators, bilateral versus unilateral application, or unusual fabrication complexity.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional component by an orthotist or clinician separate from device fabrication. |
50 |