Summary & Overview
HCPCS Q4046: Short Leg Fiberglass Splint for Adults (11+)
HCPCS Level II code Q4046 designates a fiberglass short leg splint for adolescents and adults (age 11+). The code identifies a common single-use orthopedic supply used to immobilize the lower leg and ankle following acute injuries, post-reduction care, or as a temporary stabilization device prior to definitive casting. Nationally, accurate use of this HCPCS Level II code supports consistent billing for outpatient and acute care settings and helps track utilization of non-implant orthotic supplies.
Key payers reviewed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code and its clinical context, which settings typically supply and bill for it, and what to expect in payer coverage discussions. The publication summarizes common billing modifiers and payer interactions where available, reimbursement benchmarks when provided, and relevant coding considerations for outpatient orthopedic and emergency care workflows. Practical takeaways include clarity on service lines that commonly bill this supply and how the code fits into episode-of-care documentation for immobilization and fracture management. Data not available in the input is noted where specific payer rules, associated taxonomies, and ICD-10 pairings are not provided.
Billing Code Overview
HCPCS Level II code Q4046 represents cast supplies, short leg splint, adult (11 years +), fiberglass. This item is a single-use orthopedic supply intended to create a short leg splint for immobilization of the lower leg and ankle in adolescent and adult patients aged 11 years and older.
Service type: Durable medical supply / orthotic casting accessory
Typical site of service: Emergency department, urgent care, outpatient orthopedic clinic, and ambulatory surgery centers
Clinical & Coding Specifications
Clinical Context
A 45-year-old adult presents to an orthopedic urgent care clinic after twisting his lower leg while playing recreational soccer. He reports focal pain and swelling over the distal tibia/fibula and is unable to bear weight. After clinical examination and plain radiographs that show no displaced fracture but significant instability and soft tissue swelling, the treating orthopedic clinician applies a short leg fiberglass splint to immobilize the ankle and lower leg while swelling subsides and definitive treatment is planned. The typical workflow: triage and history, focused musculoskeletal exam, weight-bearing radiographs as indicated, informed consent, application of a short leg fiberglass splint (cast supplies), patient education on elevation and return precautions, documentation of splint type, size, laterality, and any complications, and scheduling of follow-up for re-evaluation and potential definitive casting, walking boot, or orthopedic follow-up.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Applied when the short leg splint is for the left lower extremity |
RT | Right side | Applied when the short leg splint is for the right lower extremity |