CPT Code Overview

CPT 97605 describes negative pressure wound therapy (for example, vacuum-assisted drainage collection) delivered using durable medical equipment. The service includes topical applications, wound assessment, and instruction for ongoing care, billed per session for total wound surface area less than or equal to 50 square centimeters.

Service Type: Active Wound Care Management (Physical Medicine and Rehabilitation)

Typical Site of Service: Varies; commonly provided in outpatient therapy settings such as office (POS 11) or outpatient hospital.

Clinical Context

A 62-year-old patient with a chronic lower-extremity wound presents to an outpatient therapy clinic for serial negative pressure wound therapy (NPWT) sessions using durable medical equipment (DME). The clinician performs wound cleansing, topical application(s) as indicated, assesses wound size and appearance, and provides instruction for ongoing care during each session. The total wound surface area is measured and documented as less than or equal to 50 square centimeters, supporting use of 97605. Typical workflow includes wound assessment, dressing application with vacuum-assisted drainage collection, brief dressing education, and documentation of wound measurements, exudate, and any changes compared with prior visits.

Coding Specifications

• Modifiers

• 59: Distinct Procedural Service — used when 97605 is performed in a service session that is distinct or separate from other procedures performed on the same day, and documentation supports separate and independent services.

• 76: Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional — used when the same clinician performs 97605 more than once in the same day for the same patient and documentation supports multiple distinct sessions.

• Associated Provider Taxonomies

| Taxonomy Code | Specialty |---|---| | 208D00000X | General Surgery Physician | | 207W00000X | Orthopaedic Surgery Physician | | 208800000X | Podiatric Medicine & Surgery Service Providers |

• Notes on use

• Use of the above modifiers requires clear documentation of why services are distinct (59) or why repeat procedures occurred (76).

• The listed taxonomies represent clinicians commonly furnishing or supervising NPWT billed with 97605.

Related Diagnoses

• L97.209 — Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity

  Clinical relevance: Chronic lower-leg ulcers are common indications for NPWT when wounds require enhanced drainage and management; wound measurement and ongoing assessment determine use of 97605.

• L89.309 — Pressure ulcer of unspecified buttock, unspecified stage

  Clinical relevance: Pressure ulcers with measurable surface area may be treated with NPWT to manage exudate and promote wound bed preparation; documentation of size guides coding to 97605 when ≤50 cm².

• S81.009A — Unspecified open wound, unspecified knee, initial encounter

  Clinical relevance: Acute open wounds of the knee may receive NPWT as part of active wound care management; initial encounter documentation supports selection of appropriate NPWT code when area criteria are met.

• T81.31XA — Disruption of external operation (surgical) wound, not elsewhere classified, initial encounter

  Clinical relevance: Surgical wound disruptions may be managed with NPWT to control drainage and assist healing; wound area measurement determines whether 97605 applies.

• L89.899 — Pressure ulcer of other site, unspecified stage

  Clinical relevance: Pressure ulcers at non-standard locations that meet size criteria may be treated with NPWT; documentation of wound location, stage, and surface area supports use of 97605.

Related CPT Codes

| CPT Code | Description | Relation to 97605 |---|---|---| | 97606 | 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 greater than 50 square centimeters | 97606 is the size-based counterpart to 97605; used when total wound surface area is greater than 50 cm². It is an alternative code based on measured wound size and may be selected instead of 97605 in the clinical workflow when the wound area exceeds the threshold.

• Common use patterns

• 97605 and 97606 are mutually exclusive based on documented wound surface area and are selected according to measurement at the time of service.

• These codes may be billed serially across multiple visits; modifier 76 may appear when multiple sessions occur on the same day, and modifier 59 may appear when NPWT is performed as a distinct service separate from other procedures.

National Medicare mean rates for 97605 ($43.71) are similar to the BUCA (aggregate commercial) mean ($42.05), with Medicare slightly higher on average. Blue Cross Blue Shield, UnitedHealth Group, and BUCA cluster near the low-to-mid $40s, while Cigna posts the highest national mean at $48.30.

Dispersion measured as the difference between the 75th and 25th percentiles varies across payers. Cigna shows the widest spread (63.00 - 28.00 = $35.00), indicating greater variability. Blue Cross Blue Shield also has a relatively wide range (50.83 - 29.20 = $21.63). Aetna and BUCA are moderate (Aetna: 46.00 - 30.50 = $15.50; BUCA: 48.16 - 30.50 = $17.66). UnitedHealth Group and Medicare are the tightest (UHC: 46.00 - 33.33 = $12.67; Medicare: 45.00 - 41.00 = $4.00). The table and chart below present the full breakdown.