Summary & Overview
CPT 0907T: Concurrent Optical and Magnetic Stimulation Wound Therapy, Additional Application
CPT code 0907T defines an add-on code for concurrent optical and magnetic stimulation (COMS) therapy used to treat wounds, including wound assessment and dressing care, for additional wound applications of 50 square centimeters or less. As an adjunct to a primary procedure, this code clarifies billing for repeat or multiple application sites during a single episode of care. Nationally, clarity around add-on device and therapy codes like 0907T matters for consistent reimbursement, coding accuracy, and appropriate clinical documentation across outpatient wound care programs.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise policy and billing overview, typical sites of service, common clinical contexts for COMS wound therapy, and the types of benchmarks and policy elements that influence coverage and coding practices. The publication highlights where to expect variation in payer policies and documentation requirements, and outlines the clinical role of COMS as an adjunct wound therapy. Data not available in the input for specific payer policies, associated taxonomies, and ICD-10 mappings are noted where applicable.
Billing Code Overview
CPT code 0907T describes the use of concurrent optical and magnetic stimulation (COMS) therapy to treat a wound, with concurrent wound assessment and dressing care. The code applies to each additional application for wounds with a total surface area of 50 square centimeters or less and is reported in conjunction with a primary procedure.
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Service type: Wound therapy incorporating concurrent optical and magnetic stimulation with assessment and dressing care
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Typical site of service: Outpatient wound care clinics, hospital outpatient departments, ambulatory surgery centers, and other outpatient settings where specialized wound therapy is provided
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with a chronic nonhealing lower-extremity ulcer returns to an outpatient wound care clinic for a planned therapy visit. The wound measures 45 square centimeters after debridement, has moderate exudate, and demonstrates stalled granulation despite prior standard dressings and offloading. The multidisciplinary visit is led by a wound care specialist (physician or advanced practice provider) who documents a focused wound assessment (size, depth, appearance, presence of infection, pain level) and performs dressing selection and application. Concurrent optical and magnetic stimulation (COMS) therapy is applied to the wound site as an adjunctive modality. Because the wound surface area is 50 square centimeters or less, each additional application per visit is reported with 0907T in conjunction with the primary COMS procedure code. The clinical workflow includes: pre-treatment assessment and vital signs, wound cleansing and selective sharp debridement if indicated, measurement and photographic documentation, application of COMS therapy for the specified treatment duration, application of an appropriate dressing, and post-treatment instructions. Documentation includes wound measurements, treatment parameters, device settings, number of applications billed, and justification for adjunctive therapy due to delayed healing.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the COMS application required substantially greater effort, time, or complexity than typical and documentation supports the increased services. |
52 | Reduced services | Use when the COMS application is partially reduced or not completed as originally planned but still performed. |
53 | Discontinued procedure | Use when the COMS application was started but terminated due to extenuating circumstances or patient safety concerns. |
73 | Discontinued outpatient hospital/ambulatory surgery facility prior to anesthesia | Use when the patient is prepared for a facility-based procedure but the COMS application is cancelled prior to start (facility context). |
80 | Assistant surgeon | Use when an assistant surgeon is necessary and the payer allows reporting for assistant services during a COMS application in an operative or surgical setting. |
81 | Minimum assistant surgeon | Use for a minimal assistant role where payer-specific rules allow reporting for COMS-related surgical assistance. |
82 | Assistant surgeon (when qualified resident not available) | Use when an assistant is required and no qualified resident is available; applies in facility operative settings as appropriate. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services in lieu of physician | Use when a qualified non-physician practitioner performs the COMS application under appropriate state scope and payer rules. |
RT | Right side | Use when laterality is required by payer rules and the treated wound is on the right side. |
LT | Left side | Use when laterality is required by payer rules and the treated wound is on the left side. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207Q00000X | Physical Medicine & Rehabilitation Physician | Wound specialists who supervise or perform adjunctive COMS therapy in outpatient wound centers. |
208C00000X | Emergency Medicine Physician | May perform COMS in emergency or acute care settings for traumatic wounds when indicated. |
363L00000X | Wound Care Nurse Specialist | Commonly provides wound assessment, dressing care, and COMS application in clinic settings. |
367A00000X | Physician Assistant | Frequently provides COMS therapy and wound management under physician supervision. |
367H00000X | Nurse Practitioner | Provides assessment and COMS therapy in outpatient wound clinics or home health settings. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
L97.421 | Non-pressure chronic ulcer of left calf with depth limited to subcutaneous tissue | Peripheral lower-extremity ulcers commonly receive adjunctive COMS to promote granulation and reduce healing time. |
L97.429 | Non-pressure chronic ulcer of left calf with unspecified severity | Used when detailed depth is not specified; COMS may be indicated for stalled healing. |
L97.322 | Non-pressure chronic ulcer of right ankle with fat layer exposed | Deeper chronic ulcers benefit from combined modalities including COMS after appropriate debridement. |
L97.411 | Non-pressure chronic ulcer of left thigh limited to subcutaneous tissue | Thigh ulcers treated in outpatient wound centers may receive COMS as adjunct therapy. |
I83.019 | Varicose veins of right lower extremity with ulcer, unspecified severity | Venous stasis ulcers are a common indication for adjunctive wound therapies including COMS. |
E11.621 | Type 2 diabetes mellitus with foot ulcer | Diabetic foot ulcers frequently require multimodal management; COMS can be an adjunctive modality when healing is delayed. |
T79.A11A | Soreness and pain of right lower leg due to trauma, initial encounter | Traumatic wounds with delayed healing may receive COMS as part of wound care visits. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
97602 | Debridement (e.g., high pressure waterjet, sharp selective debridement) each 20 sq cm or less | Often performed immediately before COMS application to remove devitalized tissue and optimize wound bed prior to therapy. |
97605 | Negative pressure wound therapy (NPWT) supply, pump rental (first 10 days) | May be used before or after adjunctive COMS therapy in complex wounds requiring prolonged drainage management. |
11042 | Debridement, subcutaneous tissue (first 20 sq cm or less) | Surgical debridement code used when deeper tissue removal is required before applying COMS. |
29581 | Application of multi-layer compression system (for lower extremity venous ulcers) | Frequently performed in venous ulcer management in conjunction with COMS as adjunctive wound-healing therapy. |
97597 | Debridement (selective) by skilled therapist (first 20 sq cm or less) | Skilled wound care services that may precede COMS application in outpatient therapy-based wound programs. |