Summary & Overview
HCPCS Level II A6550: Wound Care Set for Negative Pressure Therapy
HCPCS Level II code A6550 denotes a wound care set for negative pressure wound therapy (NPWT) electrical pumps and encompasses all supplies and accessories needed for device operation. This code is nationally relevant as NPWT is widely used across outpatient, home health, and facility-based wound care to manage complex and chronic wounds, making A6550 central to billing for device supply bundles.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what the code covers, the typical clinical contexts and sites of service where NPWT sets are used, and an overview of payer coverage considerations. The publication summarizes common billing modifiers and payer-specific policy patterns when available, highlights coding relationships to equipment and therapy delivery, and outlines where to look for payer medical necessity and supplier documentation requirements.
This summary equips clinicians, billing professionals, and policy analysts with the operational meaning of A6550, clarifies the service line and care settings, and frames the code for further review of reimbursement benchmarks, policy updates, and clinical documentation expectations. Data not available in the input for specific payor policies, associated taxonomies, and ICD-10 pairings.
Billing Code Overview
HCPCS Level II code A6550 represents a wound care set for negative pressure wound therapy (NPWT) electrical pump and includes all supplies and accessories required for the device-based therapy. This set is intended to support NPWT delivery, supplying components that interface with an electrical pump to manage wound exudate and promote healing.
Service type: Durable medical equipment and supplies for negative pressure wound therapy
Typical site of service: Outpatient clinics, wound care centers, home health settings, and long-term care facilities
Clinical & Coding Specifications
Clinical Context
A typical patient is a 62-year-old with a chronic, non-healing lower-extremity surgical or diabetic wound managed with negative pressure wound therapy (NPWT). The wound care team evaluates wound size, exudate, and surrounding skin, and orders a disposable NPWT wound care set to attach to an electrical pump. The clinical workflow: initial wound assessment and debridement in outpatient wound clinic or home health visit; measurement and photography; selection of a compatible NPWT wound care set (A6550) containing dressings, canister, tubing, and adhesive drape; application of the dressing and securement to create an airtight seal; connection to the electrical pump; documentation of wound measurements, dressing type, negative pressure settings, and patient education on device alarms and troubleshooting. Follow-up visits occur every 48–72 hours or per clinician protocol for dressing change, monitoring for infection, and device function. Typical sites of service include outpatient wound or specialty clinics, hospital outpatient departments, and home health settings where the pump is provided separately and this set supplies the consumable dressing and accessories.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the clinician's professional interpretation related to wound assessment services billed separately |