Summary & Overview
CPT 11047: Surgical Debridement of Soft Tissue and Bone, Additional 20 cm2
CPT code 11047 covers surgical debridement that removes dead or infected tissue from bone as well as skin and deeper soft tissues, representing an additional area of up to 20 cm² beyond the initial debridement. This procedure is clinically significant for management of complex wounds and infections where removal of devitalized tissue, including bone, is necessary to control sepsis risk and promote healing. Nationally, appropriate coding for debridement affects clinical documentation, bundling rules, and hospital and ambulatory surgery billing practices.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage considerations, common modifier usage (listed separately), and implications for claim submission and audit readiness across major commercial and federal payers.
Readers will find a concise clinical context for when CPT code 11047 applies, benchmarks and typical site-of-service considerations, and guidance on documentation elements that support use of the code. The report also highlights interactions with related debridement services and practical billing scenarios that often trigger payer review. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 11047 describes surgical debridement that removes necrotic or infected tissue from bone in addition to epidermis, dermis, subcutaneous tissue, muscle, and/or fascia when performed in the same session. This code represents an additional debridement area of up to 20 cm² beyond the initial debridement procedure.
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Service type: Surgical debridement of soft tissue and bone (adjunct area up to 20 cm²)
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Typical site of service: Operating room, procedure room, or other surgical setting where excisional debridement of soft tissue and bone is performed
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with poorly controlled type 2 diabetes mellitus and peripheral neuropathy presents to an outpatient wound care clinic with a chronic non-healing ulcer over the plantar surface of the right foot. The lesion demonstrates necrotic tissue with evidence of infection extending into subcutaneous tissue and probable involvement of underlying fascia and superficial muscle on exam and imaging. The podiatric surgeon performs sharp surgical debridement in the procedure room under local anesthesia, removing devitalized epidermis, dermis, subcutaneous tissue, and devitalized superficial muscle and fascia as needed. The procedure addresses an initial 20 cm2 of infected/necrotic tissue; irrigation and packing follow, and the patient is observed briefly before discharge with wound-care instructions and scheduled follow-up.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Distinct procedural service | When a debridement is performed at a separate anatomical site or a different session from another procedure and documentation supports distinct service. |
25 | Significant, separately identifiable E/M service by the same physician on the same day | When a medically necessary evaluation and management visit is performed on the same day as the debridement and clearly documented. |
52 | Reduced services | When the debridement is partially reduced or less than described by the full code due to intraoperative findings or patient intolerance. |
53 | Discontinued procedure | When the procedure is started but terminated due to patient instability or other extenuating circumstances. |
22 | Increased procedural services | When work, time, or complexity substantially exceeds typical expectations for the debridement and adequate documentation supports increased payment. |
76 | Repeat procedure by same physician | When the same physician performs an additional debridement procedure later the same day. |
77 | Repeat procedure by another physician | When another physician repeats the debridement procedure the same day (note: 77 not listed in provided modifiers; use 59 or XS as applicable). |
50 | Bilateral procedure | When debridement of anatomically bilateral sites is performed and the payer requires a bilateral modifier. |
78 | Unplanned return to the operating/procedure room for a related procedure during the postoperative period | When the patient requires an unplanned return to the procedure room for additional debridement due to hemorrhage, infection, or other complication. |
79 | Unrelated procedure or service by the same physician during the postoperative period | If a different unrelated procedure is performed during the global period. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207Q00000X | Podiatry | Podiatric surgeons commonly perform lower-extremity debridement for foot ulcers. |
207L00000X | Orthopedic Surgery | Orthopedic surgeons may perform debridement when deeper musculoskeletal infection is suspected. |
208000000X | General Surgery | General surgeons perform debridement for wounds involving deeper soft tissue or systemic infection. |
330400000X | Physical Medicine & Rehabilitation | PM&R specialists may perform or coordinate debridement as part of wound management in complex patients. |
363A00000X | Wound Care Specialist | Clinicians focused on wound care (may be nurse specialists or physicians) who provide surgical debridement in clinic settings. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
L97.422 | Non-pressure chronic ulcer of left calf with necrosis of muscle | Chronic lower-extremity ulcers with necrosis often require surgical debridement to remove devitalized tissue and control infection. |
E11.621 | Type 2 diabetes mellitus with foot ulcer | Diabetic foot ulcers commonly develop necrosis and infection necessitating debridement to reduce bacterial load and promote healing. |
M86.172 | Other osteomyelitis, left lower limb | When bone infection is present or suspected, debridement may include removal of infected bone tissue as part of source control. |
L98.4 | Chronic ulcer of skin, unspecified | Chronic ulcers with nonviable tissue benefit from surgical debridement to create a healthy wound bed. |
T79.A11 | Pressure ulcer with full-thickness tissue loss, stage 3, infected | Infected pressure ulcers with full-thickness loss often require aggressive debridement including muscle or fascia. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
11042 | Debridement, subcutaneous tissue (first 20 sq cm or less) | Often billed for more superficial debridement when only subcutaneous tissue is involved; may be used when muscle/fascia are not debrided. |
11043 | Debridement, muscle and/or fascia (first 20 sq cm or less) | Used when debridement includes muscle/fascia but not bone; may be reported instead of or in addition depending on area and layers involved. |
11045 | Debridement, epidermis and/or dermis (first 20 sq cm or less) | Used for superficial debridement limited to epidermis/dermis; may be reported in combination when separate layers are debrided. |
11047 | Debridement including bone (add-on for additional area up to 20 sq cm) | Add-on code reflecting additional increments of tissue area when initial debridement code has been reported; used in extended cases involving bone. |
11010 | Debridement of nail(s) by any method(s); simple | May be performed concurrently for periungual infections when applicable. |
97605 | Negative pressure wound therapy (wound care management) | May be performed after debridement as part of ongoing wound management in the postoperative period. |