97605

Negative pressure wound therapy (eg, vacuum assisted drainage collection), utilizing durable medical equipment (DME), including topical application(s), wound assessment, and instruction(s) for ongoing care, per session; total wound(s) surface area less than or equal to 50 square centimeters

CPT code 97605 describes the comprehensive application, management, and oversight of negative pressure wound therapy (NPWT), a highly effective therapeutic technique utilized to promote accelerated healing in severe acute and chronic wounds. This specific procedural code is designated for the utilization of a traditional negative pressure system connected to a durable medical equipment (DME) vacuum pump, where the cumulative surface area of all treated wounds during a single clinical session is exactly 50 square centimeters or less. The procedure begins with a detailed and rigorous clinical assessment of the wound bed. The healthcare provider measures the precise dimensions of the wound, including length, width, and depth, evaluates the presence of healthy granulation tissue, measures the amount of exudate, checks for any necrotic tissue or slough, and assesses the integrity of the peri-wound skin. Following this thorough evaluation, the provider prepares the wound site and applies specific topical dressings. These dressings typically consist of an open-cell polyurethane foam or a specialized medical gauze, which must be carefully cut, shaped, and contoured to fit precisely within the wound cavity without overlapping the intact peri-wound epidermis, which could cause maceration. A transparent occlusive drape is then applied over the primary dressing and extending over the surrounding skin margins to create an absolute airtight seal. The provider then makes a small fenestration in the drape directly over the foam, attaches a vacuum suction pad or track pad, and connects the tubing to the external DME pump and fluid canister. Once activated, the pump delivers controlled subatmospheric pressure, either continuously or intermittently depending on the specific clinical indications, which actively draws out infectious materials, reduces localized tissue edema, promotes angiogenesis, and stimulates robust cellular proliferation through mechanical micro-deformation of the local tissue. This CPT code is entirely comprehensive; it intrinsically encompasses the initial and ongoing wound evaluation, the precise technical application of the topical dressing components, the initiation of the suction mechanism, and the critical educational instructions provided to the patient or caregiver regarding device management, identifying alarms, and ongoing care between clinical visits. It is important to note that the DME equipment itself (the vacuum pump) and the disposable supplies (fluid collection canisters, dressing kits) are not included in the practice expense for this code and are typically reported with distinct Healthcare Common Procedure Coding System (HCPCS) codes. NPWT is widely indicated for complex, hard-to-heal wounds such as stage III or IV pressure ulcers, complicated diabetic foot ulcers, chronic venous stasis ulcers, dehisced surgical incisions, and traumatic injuries that are refractory to standard, conservative wound care modalities. Proper documentation of the total wound surface area is essential to justify the selection of 97605 over other negative pressure wound therapy codes.

Clinical Indications

  • Chronic pressure ulcers (Stage III or IV) requiring accelerated granulation tissue formation and exudate management.
  • Diabetic neuropathic foot ulcers refractory to standard moist wound healing protocols.
  • Venous stasis ulcers presenting with significant exudate requiring continuous subatmospheric drainage.
  • Surgical wound dehiscence or delayed primary closure sites to manage fluid and contract the wound edges.
  • Traumatic wounds, degloving injuries, or open fractures post-debridement.
  • Preparation of a suboptimal wound bed prior to definitive skin grafting or flap reconstructive surgery.
  • Securing and promoting the revascularization of recently placed split-thickness or full-thickness skin grafts.

Procedure Steps

  1. Perform a comprehensive assessment of the wound, including measurement of length, width, and depth, calculating the total surface area to confirm it is 50 square centimeters or less.
  2. Cleanse the wound bed and periwound skin, removing any loose slough, exudate, or previously applied topical agents using standard saline or a non-cytotoxic cleanser.
  3. Apply a skin protectant or barrier wipe to the intact periwound epidermis to prevent maceration from moisture and the adhesive drape.
  4. Cut and shape the specialized NPWT dressing (polyurethane foam or antimicrobial gauze) to exactly fit the dimensions of the wound cavity, ensuring no overlap onto the intact periwound skin.
  5. Cover the dressing and surrounding skin margins with an adhesive, transparent occlusive drape to establish a completely airtight environment.
  6. Create a small, precise fenestration (hole) in the transparent drape directly over the center of the foam or gauze dressing.
  7. Affix the suction pad over the fenestration and connect the attached tubing to the DME negative pressure vacuum pump and the corresponding fluid collection canister.
  8. Activate the vacuum pump, set to the prescribed negative pressure (typically between -75 to -125 mmHg), and visually verify that the dressing collapses, confirming an adequate airtight seal without audible or palpable leaks.
  9. Provide comprehensive instructions to the patient and/or caregiver regarding pump operation, battery and power management, troubleshooting alarms, and emergency contact procedures.

Coding Guidelines

  • Report CPT code 97605 only when the cumulative total surface area of all wounds treated with NPWT during the session is 50 square centimeters or less.
  • This code specifically requires the use of a traditional Durable Medical Equipment (DME) vacuum pump. For disposable or non-DME negative pressure therapy devices, report codes 97607 or 97608 instead.
  • Do not report 97605 in conjunction with 97606 (NPWT greater than 50 sq cm) during the same session; you must sum the surface area of all treated wounds to determine the single appropriate code.
  • Code 97605 inherently includes the topical application of the dressing, the wound assessment, and the patient instruction. These components must not be billed separately.
  • Per National Correct Coding Initiative (NCCI) edits, active wound care management (e.g., 97597, 97598) and standard debridement procedures are typically bundled with NPWT codes if performed on the exact same wound during the same encounter. Modifiers (e.g., 59, XS) may be applicable only if distinct, separate wounds are treated.
  • The DME vacuum pump and disposable dressing supplies (canisters, foam kits) are reported separately using appropriate HCPCS codes (e.g., E2402 for the pump, A6550 for the dressing sets), subject to specific payer reimbursement policies.

Associated ICD-10 Codes