Summary & Overview
HCPCS A4639: Replacement Pad for Infrared Heating Pad System, Each
HCPCS Level II code A4639 represents a replacement pad for an infrared heating pad system. This code identifies a durable medical equipment (DME) accessory—an individual heating pad component intended to restore or maintain function of an infrared therapeutic device. Nationally, clear coding of DME accessories matters for claims processing, inventory control, and patient access to non-invasive thermal therapies.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical and supply-chain context, typical sites of service, and where this item fits in DME billing. The publication provides benchmarks and coverage patterns where available, plus common administrative considerations for billing DME accessories under HCPCS Level II coding. For fields not provided in the source input, the document states when data is not available.
Billing Code Overview
HCPCS Level II code A4639 denotes a replacement pad for an infrared heating pad system, each. The item represents a single replacement heating pad component designed for use with an infrared therapeutic heating device.
Service type: Durable medical equipment accessory / replacement part
Typical site of service: Outpatient settings, clinics, home health, or patient residence where infrared heating systems are used
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient presents to an outpatient orthopedics or physical medicine clinic reporting localized myofascial pain or chronic joint stiffness after a soft tissue injury. The clinician determines that an infrared heating pad system is indicated as part of a conservative therapy plan to provide moist heat for symptomatic relief and to facilitate home-based heat therapy. The durable medical equipment supplier documents the ordered device and ships the system; the patient later requests a replacement heating pad pad for an existing infrared heating pad system due to wear or failure. Billing for the replacement pad is submitted using A4639 as a single item; the typical documentation includes the supplier invoice, item description matching the patient’s existing system, prescription or order from the treating clinician indicating medical necessity for continued heat therapy, and beneficiary identifying information. Typical site of service is an outpatient clinic, durable medical equipment supplier location, or patient’s home when delivered. Usual clinical workflow: clinician documents indication and orders accessory replacement; supplier verifies warranty/benefit coverage, obtains prior authorization if required, dispenses or ships the replacement pad, and submits claim with appropriate modifiers (for example, shipment or bilateral if applicable) and supporting documentation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier |