Summary & Overview
HCPCS Level II A4570: Splint
HCPCS Level II code A4570 denotes a splint supplied as a durable medical device to support or immobilize an injured or weakened body part. Nationally, splints are a common component of musculoskeletal and post-operative care plans and represent a routine, non-invasive intervention with implications for outpatient therapy, orthopedics, and durable medical equipment (DME) management. This code matters because it is used across provider types to document and bill for device supply and fitting in ambulatory and home-based settings.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise orientation to clinical contexts in which a splint is used, the typical sites of service, and the administrative aspects tied to billing this HCPCS Level II code. The publication outlines expected benchmarks and payment considerations, common modifier usage (where applicable), and how the code interacts with durable medical equipment workflows. Policy updates affecting DME reimbursement and documentation standards are summarized to provide national context for providers, billing specialists, and compliance teams.
This summary is intended to equip readers with a clear understanding of the code’s clinical purpose and administrative role, enabling more informed coding, claims submission, and organizational policy alignment.
Billing Code Overview
HCPCS Level II code A4570 describes a splint. This item is a device used to support, immobilize, or protect an injured or weakened body part. The service type is durable medical device provision and fitting, and the typical site of service is outpatient settings such as clinics, physician offices, ambulatory surgical centers, and durable medical equipment suppliers.
Clinical & Coding Specifications
Clinical Context
A 56-year-old patient presents to an outpatient orthotics clinic with wrist pain and functional limitation after a distal radius fracture treated nonoperatively. The clinician evaluates healing on radiographs, assesses range of motion and swelling, and determines a custom or prefabricated splint is required to immobilize the wrist and support early functional activity. The workflow includes patient assessment, measurement and fitting of a prefabricated or custom-molded splint, patient education on wear schedule and skin care, documentation of medical necessity linking the splint to the diagnosis (for example, fracture, acute sprain, or tendonitis), and supply of the device. Follow-up visits occur to adjust or replace the splint as swelling changes or to transition to a less restrictive orthosis as healing progresses. Typical sites of service are outpatient clinic, orthotics/prosthetics facility, urgent care, and emergency department depending on acuity and setting.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | Use when the splint is applied to the left extremity |
RT | Right side | Use when the splint is applied to the right extremity |