Summary: WoundSource, the HMP Global wound care product and education platform, publishes this foundational reimbursement reference article defining the core billing and coding terminology that wound care clinicians, nurses, and administrators encounter when managing Medicare and commercial payer claims. Given the complexity of wound care billing — where reimbursement rates are high, documentation requirements are stringent, and errors carry significant financial and compliance risk — fluency in reimbursement terminology is increasingly treated as a core clinical competency rather than an administrative function. The glossary covers the principal coding systems used in wound care: Current Procedural Terminology (CPT) codes, which describe procedures performed and in wound care often specify anatomic location and wound size (e.g., debridement codes 97597–97598 for skin, 11042–11047 for deeper tissue); Healthcare Common Procedure Coding System (HCPCS) Level II codes, a standardized CMS-maintained coding system for products, supplies, and durable medical equipment not captured by CPT (e.g., foam dressing code A6209); and ICD-10-CM diagnosis codes, which identify wound etiology and are essential for demonstrating medical necessity. The article also defines the administrative structures that govern reimbursement decisions: Medicare Administrative Contractors (MACs), which are regionally based Medicare insurers that process claims, handle provider enrollment, conduct audits, and establish Local Coverage Determinations (LCDs); and the LCD itself, which is a MAC-issued coverage policy for specific procedure or service categories that dictates covered indications, required documentation, and billing restrictions. Additional terms include the global period (a defined post-procedure window during which related services cannot be separately billed), modifiers (two-character alphanumeric codes appended to CPT or HCPCS codes to provide additional billing context, such as Modifier 25 for same-day E&M and procedure billing, or Modifier 59 for distinct procedural services), and place-of-service (POS) codes, which designate the care setting and directly affect which codes and coverage rules apply.
Key Highlights:
- CPT codes: identify the procedure performed — wound care-specific codes include 97597–97598 (selective debridement, skin), 11042–11047 (subcutaneous/deeper tissue debridement), and 97605–97606 (NPWT); codes often require documentation of wound size and anatomic location
- HCPCS Level II: CMS-maintained coding for durable medical equipment and supplies not covered by CPT — wound dressings, NPWT devices, and compression products are commonly billed using HCPCS A-codes and K-codes
- ICD-10-CM: diagnosis code paired with every CPT/HCPCS code — must accurately reflect wound etiology (e.g., L89.xx pressure injury, E11.621 type 2 DM with foot ulcer) to establish medical necessity
- MAC and LCD: MACs are regional Medicare contractors that administer claims and set LCDs — coverage for a given wound care service may vary by MAC jurisdiction, making local LCD review essential before billing
- Modifiers 25 and 59 are among the most commonly used in wound care: Modifier 25 permits billing a separate E&M service on the same day as a procedure; Modifier 59 identifies a distinct procedural service from another procedure billed that day
- Global period and POS codes: global periods can preclude separate billing of post-procedure wound care visits; POS designation (e.g., POS 11 office, POS 19/22 outpatient hospital, POS 31/32 SNF) affects applicable fee schedules and coverage rules
Keywords: wound care billing coding, CPT codes wound care, Medicare wound care reimbursement, LCD wound care, HCPCS wound dressings, wound care documentation
WoundSource Editorial Team