CPT Code 97602 Guide: Non-Selective Wound Debridement Billing Rules

CPT 97602: Non-Selective Wound Debridement

CPT code 97602 describes non-selective debridement of open wounds, including removal of devitalized tissue through methods such as wet-to-moist dressings, enzymatic debridement, or abrasion. Unlike selective debridement, the method does not allow the provider to selectively remove only the devitalized tissue with an instrument.

Wound debridement codes are distinguished by how the tissue is removed, what type of debridement is performed, and the deepest tissue level addressed. Choosing the correct code therefore depends on the actual procedure documented in the medical record.

CPT 97602 is reported once per session. It is not reported based on wound size, does not have an additional-area add-on code, and should not be used when the documented service was selective or excisional debridement.

Selective debridement performed with instruments such as scissors, a scalpel, or forceps is reported with CPT 97597, with 97598 used when the additional-area requirements are met. Debridement that reaches subcutaneous tissue, muscle, fascia, or bone is reported from CPT 11042 through 11047, depending on the deepest tissue removed and whether the service is performed on a single or multiple sites.

Reporting 97602 when the documentation supports selective or excisional debridement, or when no devitalized tissue was actually removed, can result in a coding mismatch and may expose the claim to denial or post-payment review.

This guide explains what CPT 97602 means, when it should be reported, how it differs from other wound debridement codes, and what documentation should support billing. For help with wound care coding, claim submission, and reimbursement, see our medical billing services.

What CPT Code 97602 Is?

CPT code 97602 describes the removal of devitalized tissue from a wound using a non-selective method, without anesthesia. The CPT description states: “Removal of devitalized tissue from wound(s), non-selective debridement, without anesthesia (eg, wet-to-moist dressings, enzymatic, abrasion), including topical application(s), wound assessment, and instruction(s) for ongoing care, per session.” Larval therapy is also commonly listed as a non-selective method.

This code has three conditions that must all be met:

• Dead tissue must be present and removed. A dressing change on a clean wound is not 97602.
• The method must be non-selective. If the clinician removed only dead tissue using instruments or a waterjet, the service is selective debridement, not 97602.
• It is billed per session. One unit covers the session, no matter how many wounds are treated this way or how large they are.

Miss any of these, and 97602 is not the right code.

Key Facts About 97602 at a Glance

Feature	CPT 97602
Type of debridement	Non-selective
Example methods	Wet-to-moist dressings, enzymatic, abrasion, larval therapy
Anesthesia	Performed without anesthesia
Billing unit	Once per session
Area limits	None
Add-on code	None
Included in the code	Topical applications, wound assessment, instructions for ongoing care, dressings
Medicare physician payment	Bundled (status B), generally not paid separately
Cannot be billed with	97597, 97598 or 11042 to 11047 for the same wound on the same date

What “Non-Selective” Means

In selective debridement, the clinician decides piece by piece which tissue to remove and which to leave. In non-selective debridement, the method acts on the wound as a whole. Whatever sticks to the dressing, whatever the enzyme breaks down, or whatever comes loose with scrubbing is removed, and healthy tissue can be removed along with the dead tissue.

This does not mean non-selective debridement is poor care. Some of these methods are useful in the right situation, for example when a patient cannot tolerate sharp debridement. The word simply describes how the method works, and that is what decides the code.

The Methods Billed With 97602

Wet-to-moist dressings. A moistened gauze dressing is placed in the wound and removed later, taking with it the tissue that has stuck to it. Because the dressing cannot tell healthy tissue from dead tissue, it can pull away both.

Enzymatic products. A topical product containing enzymes is applied to break down dead tissue. Enzymatic debridement is listed in the 97602 description, so applying an enzymatic product is billed as 97602, not as the selective code 97597.

Abrasion. The wound surface is wiped or scrubbed to remove loose material, without choosing between healthy and dead tissue.

Larval therapy. Sterile medical larvae are placed on the wound, where they feed on dead tissue.

What Is Included in 97602?

The following are part of the service and are not billed separately:

• Topical products applied during the session
• Wound assessment
• Instructions to the patient or caregiver for ongoing care
• Dressings applied to the wound

How 97602 Is Paid?

On the Medicare Physician Fee Schedule, 97602 has a bundled status (status B). For physician services, this means separate payment is generally not allowed.

Other situations can be different. Therapists working within their scope of practice follow therapy billing rules and add the appropriate therapy modifier. Hospital outpatient departments follow facility billing rules. Commercial payers set their own policies. Always check the specific payer’s policy and the rules for your setting before billing 97602.

What to Document for 97602?

The note should include:

• The type of technique used, such as wet-to-moist dressing, enzymatic product or abrasion
• A thorough objective assessment of the wound, including location, measurements, drainage, color, texture and the condition of the surrounding skin
• The dead tissue present before treatment and what was removed
• How the wound looked after treatment and the dressing applied
• Why debridement was needed on that date

A note that only says a dressing was changed does not support 97602.

Whirlpool and 97602

Medicare guidance has a specific rule about whirlpool:

• If whirlpool is used on a wound before non-selective debridement of that wound during the same visit, the whirlpool can be paid separately and may be billed with modifier 59.
• If whirlpool is used on a wound before selective debridement of that wound during the same visit, the whirlpool is not paid separately and should not be billed with modifier 59, unless two separate wounds are treated with the different methods.

Whirlpool may also be done during the same visit for reasons unrelated to wound care.

The Whole Debridement Picture

With 97602 in mind, it helps to see all the debridement codes side by side. Debridement is reported with three groups of codes:

Code group	Type	How it is billed
97602	Non-selective debridement	Once per session, no area limits, no add-on
97597 and 97598	Selective debridement of an open wound	97597 once per session for the first 20 sq cm or less, plus 97598 for each additional 20 sq cm or part thereof
11042 to 11047	Surgical (excisional) debridement	Main code chosen by the deepest tissue debrided, plus an add-on for each additional 20 sq cm or part thereof

Three questions point you to the right code almost every time:

1. Was dead tissue actually removed?
2. Was it removed selectively, or by a non-selective method?
3. What was the deepest tissue layer debrided?

If the method was non-selective, the answer is 97602. If the method was selective, the depth decides between 97597 and the surgical codes.

97602 Compared With 97597 and 97598

What 97597 and 97598 describe

CPT 97597 is for selective debridement of an open wound. The descriptor gives examples of the material removed, such as fibrin, devitalized epidermis and/or dermis, exudate, debris and biofilm. It gives examples of the techniques: high pressure waterjet with or without suction, and sharp selective debridement with scissors, scalpel and forceps. It includes topical applications, wound assessment, use of a whirlpool when performed, and instructions for ongoing care. It is reported per session, based on total wound surface area, for the first 20 sq cm or less.

CPT 97598 is the add-on for each additional 20 sq cm, or part thereof. It is always billed with 97597 and never on its own.

The core difference: how the tissue is removed

• In selective debridement (97597), the clinician removes only the dead tissue and leaves healthy tissue in place, using instruments such as scissors, scalpel and forceps, or a high pressure waterjet.
• In non-selective debridement (97602), the method does not choose only the dead tissue. A dressing, an enzyme or scrubbing acts on the wound as a whole.

Clinicians doing selective debridement use practical signs to tell dead tissue from healthy tissue. Dead tissue is often black, yellow, gray or brown, and may be hard and dry or soft and stringy.

Healthy tissue is usually pink or red and bleeds when reached. Reaching healthy, bleeding tissue is usually the point where removal stops.

The billing difference: area versus session

• 97602 is billed once per session, and wound size does not matter.
• 97597 is billed once per session for the first 20 sq cm or less, and 97598 is added for each additional 20 sq cm or part thereof.

Because 97597 and 97598 depend on area, wound measurements are required to support the units. With 97602, measurements are still part of a good wound assessment, but they do not change the number of units.

How the units work for 97597 and 97598

1. 97597 is billed once per session.
2. Extra area is billed with 97598, one unit for each additional 20 sq cm.
3. Any part of an additional 20 sq cm counts as one full unit of 97598.
4. 97598 is never billed without 97597.
5. When more than one wound is treated selectively in the same session, the areas are added together and the units are based on the total.

A common mistake is billing several units of 97597 for a large wound. That is never correct. The base code is billed once, and the extra area goes on 97598.

The payment difference

• 97602 is bundled for Medicare physician services.
• 97597 and 97598 are payable when medically necessary and properly documented.

Enzymatic products: where they belong

Enzymatic debridement is listed in the 97602 descriptor. So when the service is applying an enzymatic product, it is reported under 97602, not 97597. If the clinician also removes dead tissue with sharp instruments in the same session on the same wound and documents it, that sharp work supports 97597 for that wound. But 97597 and 97602 are not billed together for the same wound on the same date.

The combination rule

Medicare guidance is clear: 97602 should not be billed together with 97597 or 97598 for the same wound on the same date of service. For each wound, choose the code that matches what was actually done.

If a patient has two separate wounds, and one is treated selectively while the other is treated non-selectively, each can be billed with its own code when each wound is documented separately. Modifier 59 is used to show that the services are distinct.

Side by side

Billing Factor	97602	97597 and 97598
Type	Non-selective	Selective
How tissue is removed	Method does not choose only dead tissue	Only dead tissue removed, healthy tissue left
Examples in the descriptor	Wet-to-moist dressings, enzymatic, abrasion	High pressure waterjet; sharp debridement with scissors, scalpel and forceps
Billing basis	Per session	Total wound area
Add-on	None	97598
Medicare physician payment	Bundled (status B)	Payable with documentation
Same wound, same day	Not with 97597 or 97598	Not with 97602

How the note decides between them

• A note that says only that a wet-to-moist dressing was applied and removed, with no tissue removal described, is a dressing change. It does not support a debridement code.
• A note that says a wet-to-moist dressing was removed and describes the dead tissue that came away with it may support 97602, depending on the payer.
• A note that says dead tissue was cut away with scissors and forceps until healthy, bleeding tissue was reached supports 97597, as long as only surface tissue was removed.

97602 Compared With Surgical Debridement: 11042 to 11047

What the surgical codes describe

The surgical debridement codes are for excisional debridement. The code is chosen by the deepest tissue layer debrided.

Deepest tissue debrided	Main code: first 20 sq cm or less	Add-on: each additional 20 sq cm or part thereof
Subcutaneous tissue	11042	11045
Muscle and/or fascia	11043	11046
Bone	11044	11047

The full descriptors are:

• 11042: Debridement, subcutaneous tissue (includes epidermis and dermis, if performed); first 20 sq cm or less.
• 11043: Debridement, muscle and/or fascia (includes epidermis, dermis, and subcutaneous tissue, if performed); first 20 sq cm or less.
• 11044: Debridement, bone (includes epidermis, dermis, subcutaneous tissue, muscle and/or fascia, if performed); first 20 sq cm or less.
• 11045, 11046 and 11047: each additional 20 sq cm, or part thereof, for the matching main code.

The core difference

• 97602 describes non-selective methods such as dressings, enzymes and abrasion. It is not tied to a tissue depth, and it is billed once per session.
• 11042 to 11047 describe excisional debridement of specific deeper tissue layers. The code depends on the deepest layer debrided, and area is billed in 20 sq cm increments.

The combination rule

Medicare guidance states that 97597, 97598 and 97602 should not be billed with 11042 through 11047 for the same wound. The depth of tissue debrided decides the code. If a wound received surgical debridement, the surgical code is billed for that wound, and 97602 is not added.

The add-on pairings

Each surgical add-on goes with only one main code:

• 11045 goes with 11042.
• 11046 goes with 11043.
• 11047 goes with 11044.

They cannot be mixed. For example, 11046 cannot be billed with 11044. This is a useful contrast with 97602, which has no add-on at all.

The deepest-layer rule

The words “if performed” in the descriptors mean that each surgical code already includes the layers above the deepest one. If debridement reached bone, 11044 already covers the skin, subcutaneous tissue, muscle and fascia removed along the way. Codes 11042 and 11043 are not added for the same wound.

When a single wound is debrided to more than one depth, one code is billed for that wound, based on the deepest level debrided.

Depth of debridement, not depth of the wound

The surgical code depends on what tissue was actually debrided, not simply on how deep the wound is. Medicare guidance gives an example: if only biofilm on the surface of an ulcer that reaches the muscle is removed, 97597 and 97598 are appropriate. If the muscle itself is debrided, the 11043 and 11046 codes apply.

Units for surgical debridement

The main code covers the first 20 sq cm or less. Each additional 20 sq cm, or part thereof, adds one unit of the matching add-on. Area must be measured and recorded.

Multiple wounds at different depths

When several wounds are debrided to different depths in the same session, each depth group is billed with its own main code and add-on. Wounds debrided to the same depth are combined by area within that group. Modifier 59 is used to show that the main codes for different depth groups are separate services. Payers can differ in how they want multiple wounds reported, so confirm your payer’s approach.

What the surgical codes are not used for

• Open fractures. Debridement of an open fracture is reported with fracture care codes from the musculoskeletal section of CPT, not with 11042 through 11047.
• Burns. Medicare guidance states that 11000 through 11047 should not be used for debridement of burn wounds.

Side by side

Billing Factor	97602	11042 to 11047
Type	Non-selective debridement	Surgical (excisional) debridement
Code chosen by	The non-selective method used	The deepest tissue layer debrided
Billing basis	Per session	Area, in 20 sq cm increments
Add-on	None	11045, 11046, 11047
Same wound, same day	Not with 11042 to 11047	Not with 97597, 97598 or 97602

97602 Compared With NPWT Codes: 97605 to 97608

This is one of the most common mix-ups. Because 97605 and 97606 come right after 97602 in the code list, they are sometimes treated as add-ons for extra wound area. They are not. They are negative pressure wound therapy codes, often called wound vacuum codes.

• 97605: NPWT using durable medical equipment (reusable, usually electrically powered devices), for a total wound area of 50 sq cm or less.
• 97606: NPWT using durable medical equipment, for a total wound area greater than 50 sq cm.
• 97607: NPWT using disposable, non-durable equipment, for a total wound area of 50 sq cm or less.

• 97608: NPWT using disposable, non-durable equipment, for a total wound area greater than 50 sq cm.

Two rules to remember:

• 97607 and 97608 are not billed in addition to 97605 and 97606.
• Dressings are included in the NPWT services and are not billed separately.

Factor	97602	97605 to 97608
Service	Non-selective debridement	Negative pressure wound therapy
Area matters?	No	Yes, 50 sq cm or less versus over 50 sq cm
Device type matters?	No	Yes, reusable versus disposable
Relationship	Not an add-on to NPWT	Not an add-on to 97602

If a wound is debrided and a wound vacuum is then applied, the debridement is billed with the right debridement code and the NPWT with its own code. One is not an add-on to the other.

97602 Compared With Nail Care and Callus Paring

Nail care and callus paring are sometimes billed as wound debridement, especially in podiatry. They are separate services with their own codes.

Nail care:

• 11719: Trimming of non-dystrophic nails, any number.
• G0127: Trimming of dystrophic nails, any number (HCPCS).
• 11720: Debridement of nail(s) by any method(s), 1 to 5.
• 11721: Debridement of nail(s) by any method(s), 6 or more.

Corn and callus paring:

• 11055: Paring or cutting of a benign hyperkeratotic lesion (for example, a corn or callus), single lesion.
• 11056: Two to four lesions.
• 11057: More than four lesions.

These are routine foot care services. For Medicare, routine foot care generally needs qualifying findings and the correct Q modifier (Q7, Q8 or Q9) to be payable. They are never wound debridement, and neither 97602 nor any other wound debridement code should be used for them.

If a visit includes both nail or callus care and a true wound debridement, each is a separate service. Document and code each one on its own.

One NCCI edit is worth knowing. NCCI pairs 11055 with 11720. Modifier 59 and the X-modifiers should not be used to get around this edit when a nail is debrided on the same toe where a corn or callus on or beyond the distal interphalangeal joint is pared. If the callus is on a different toe, or is above the skin over the distal interphalangeal joint, modifier 59 or XS may be used with 11720.

Choosing the Right Debridement Code

The whole decision can be made in two steps.

Step one: look at the method.

• A non-selective method such as a wet-to-moist dressing, an enzymatic product, abrasion or larval therapy points to 97602 .
• A selective method such as sharp debridement or a high pressure waterjet means you go to step two.

Step two: look at the deepest tissue debrided.

• Only surface material such as dead skin, fibrin, slough, exudate, debris or biofilm: 97597 , plus 97598 for extra area.
• Subcutaneous tissue itself: 11042 , plus 11045 for extra area.
• Muscle or fascia itself: 11043 , plus 11046 for extra area.
• Bone itself: 11044 , plus 11047 for extra area.

And two things that are never debridement codes:

• Wound vacuum therapy: 97605 to 97608 .
• Nail and callus care: 11719 to 11721, G0127, 11055 to 11057 .

Rules for Combining Debridement Codes

• Do not bill 97602 with 97597 or 97598 for the same wound on the same date.
• Do not bill 97597, 97598 or 97602 with 11042 to 11047 for the same wound.
• Bill one debridement code group per wound per date.
• Different wounds can be billed with different code groups when each is documented separately. Modifier 59 is used to show they are distinct.
• Code what was actually done, not what was planned.
• Dressings are included in the debridement codes and in the NPWT codes.

Evaluation and Management on the Same Day

The wound assessment is already part of 97602, 97597 and the other debridement codes, so it cannot be billed again as an office visit.

An E/M can be billed on the same day only when the E/M work is significant and clearly separate from the debridement. In that case, modifier 25 is added to the E/M code, and the note should show what the separate work was.

Medicare guidance has noted that E/M codes are not usually billed together with debridement procedures. If an E/M is billed with almost every debridement, expect questions.

Measuring and Recording Wound Area

Measurements do not change the units for 97602, but they are still part of a good wound assessment, and they are required to support the units for 97597, 97598 and the surgical codes.

• Measure each wound in centimeters. For a regular shape, multiply length by width. For irregular wounds, trace the outline on a grid or film, or use a digital tool, and record the method.
• When several wounds are treated in the same session under the same code group, measure each one and add them for the total.
• Measure at every visit. Earlier measurements do not support a later claim.
• Record exact measurements rather than estimates.
• Use the same method each time, so progress can be seen.
• Put the measurements in the visit note, not only in a separate tracking system.
• If only part of a wound was treated, make that clear.

Documentation: What Every Debridement Note Needs

Whether the service is 97602, 97597 or a surgical code, a strong note answers five questions:

1. Was dead tissue present?
2. What was removed, and how?

3. How deep did the debridement go?
4. How much area was treated?
5. Why was debridement needed on this date?

Before the procedure

For each wound, record a thorough objective assessment:

• Exact location, including the side of the body
• Length and width in centimeters, and depth where it can be measured
• What is in the wound bed, such as slough, eschar, granulation tissue or biofilm
• Drainage, color, texture and temperature
• Condition of the surrounding skin
• Signs of infection, if present
• The size of the area to be debrided

If there are several wounds, assess each one before starting.

During the procedure

• The technique. Be specific: “wet-to-moist dressing,” “enzymatic product applied,” “sharp selective debridement with scissors and forceps.” Phrases like “wound debrided” do not describe the service.

The instrument, device or product used.

• The tissue removed.
• How much was removed , and whether any dead tissue remains.
• The deepest layer reached. This decides between the selective and surgical codes.
• How the patient tolerated it.

After the procedure

• What the wound looks like after treatment, using the same terms as before
• How much dead tissue remains
• Any bleeding and how it was controlled
• Any problems during or after the procedure
• The dressing applied (included in the code, but worth recording)

When the before and after descriptions are compared, the effect of the debridement should be clear.

Medical necessity

Debridement codes should be billed only for medically necessary, skilled debridement. The note should show why debridement was needed on that date, the diagnosis, previous treatment, the

plan going forward, and, if debridement is repeated at many visits, why dead tissue keeps forming.

Medical Necessity in Practice

What creates the need for debridement is dead tissue in the wound on the date of service, not the diagnosis on its own. A wound type that often needs debridement may, on a given day, be clean and healing with nothing to remove. On that day, no debridement code should be billed.

• Repeat debridement needs a reason recorded at every visit.
• As a wound heals and dead tissue clears, the need for debridement usually goes down, and the notes should reflect that.
• A wound that does not improve despite repeated debridement needs to be looked at more closely, not simply billed again.
• When debridement is not needed at a visit, say so in the note. It shows the clinician is judging need each time.

Common Mistakes With 97602

• Billing 97602 for a routine dressing change. A dressing change without meaningful debridement is not 97602.
• Billing more than one unit per session. 97602 is billed once per session.
• Pairing 97602 with 97605 or 97606. Those are wound vacuum codes, not add-ons.

Billing 97602 with 97597 or 97598 for the same wound on the same day.

• Billing 97602 with a surgical code for the same wound.
• Billing enzymatic application as 97597. It belongs under 97602.

Expecting Medicare to pay 97602 separately for physician services. It is bundled.

• Billing dressings separately. They are included.
• Not naming the technique in the note.

Common Mistakes Across All Debridement Codes

Billing debridement for routine wound care. Cleaning a wound and changing a dressing is not debridement. Bill only when dead tissue was present and removed, and show it in the note.

Using 97597 when deeper tissue was debrided. Check the deepest layer every time and state it in the note.

Missing measurements. Make measuring a required step, and put the numbers in the visit note.

Wrong units. 97597 once with 97598 for extra area. 97602 once with no add-on. Surgical add-ons paired only with their own main code. Set up billing software to block wrong combinations.

Billing nail or callus care as wound debridement. Use the nail and callus codes and follow routine foot care rules.

Billing two debridement code groups for the same wound. One code group per wound per date.

Using modifiers without support. Modifier 25 only for a separate, significant E/M. Modifier 59 only for truly distinct wounds or services shown in the note.

Billing too often without support. Record the dead tissue present at every visit and explain why debridement is still needed.

Copying notes. Write each note for that visit.

Walking Through Common Situations

A dressing change on a clean wound. The wound is clean and healing, with no dead tissue. The clinician cleans it and applies a new dressing. No debridement code is billed.

A wet-to-moist dressing that removes dead tissue. The clinician removes a wet-to-moist dressing, and dead tissue comes away with it. The note describes the technique and the tissue removed. This is non-selective debridement, billed as 97602 once for the session, subject to the payer’s rules.

Enzymatic product only. The patient cannot tolerate sharp debridement, so the clinician applies an enzymatic product and a dressing. This is billed as 97602.

Sharp removal of slough. The clinician removes slough with scissors and forceps until healthy tissue is reached. Only surface material was removed. This is billed as 97597, with 97598 added only if the total area treated goes past the first 20 sq cm.

Enzymatic product and sharp removal on the same wound. The clinician applies an enzymatic product and also removes dead tissue with sharp instruments on the same wound, and documents both. The sharp work supports 97597 for that wound. 97602 is not also billed for the same wound on the same day.

Two wounds, two methods. One wound is treated with a wet-to-moist dressing that removes dead tissue. A separate wound has slough removed with sharp instruments. Each wound is documented on its own. The first is billed as 97602 and the second as 97597, with modifier 59 showing they are distinct.

Debridement into subcutaneous tissue. The clinician debrides dead subcutaneous tissue. This is billed as 11042, with 11045 for any extra area. Neither 97597 nor 97602 is added for the same wound.

Debridement to bone. The clinician debrides bone after removing all the dead tissue above it. This is billed as 11044, with 11047 for any extra area. Codes 11042 and 11043 are not added.

Surface biofilm on a deep ulcer. The ulcer reaches the muscle, but the clinician only removes biofilm from the surface. This is billed as 97597 and 97598, not as a surgical code.

Debridement followed by a wound vacuum. The clinician debrides a wound and then applies negative pressure wound therapy with a reusable device. The debridement is billed with its own code, and the NPWT with 97605 or 97606 based on total wound area. Neither is an add-on to the other.

A podiatry visit with nails, a callus and a wound. The clinician debrides thick nails, pares a callus and removes slough from a separate open wound. The nails are billed with the nail debridement code, the callus with the paring code, and the wound with the appropriate debridement code. Each is documented separately, and routine foot care rules apply to the nail and callus services.

Settings and Provider Types

The same service can be paid differently depending on where it is done and who does it, and this matters most for 97602.

• Physician offices. 97602 is bundled for Medicare physician services. 97597, 97598 and the surgical codes are billed according to CPT and payer rules.
• Therapy. Therapists working within their scope of practice follow therapy billing rules and add the appropriate therapy modifier.
• Hospital outpatient departments. Facility billing follows its own rules.
• Services by clinical staff. Medicare has rules for wound care provided by qualified staff as part of a physician’s or non-physician practitioner’s services, including staff qualification and supervision requirements.
• Nursing facilities and home health. Many services are bundled in these settings, so confirm what can be billed separately.

In every setting, check the payer’s policy and the rules for your setting before billing.

Modifiers Used With Debridement

• Modifier 25: Added to an E/M code when a significant, separately identifiable E/M service is provided on the same day as a procedure.

• Modifier 59: Shows that a service is distinct from another service billed the same day, such as debridement of separate wounds.
• X-modifiers (XE, XS, XP, XU): More specific versions of modifier 59 that some payers prefer.
• Therapy modifiers (GP, GO, GN): Used when services are provided by therapists under a therapy plan of care.
• Q modifiers (Q7, Q8, Q9): Used with Medicare routine foot care services to show qualifying findings.

Every modifier must match what actually happened and be supported by the note.

Building a Better Workflow

For clinicians

• Measure every wound and record the method.
• Name the technique, the instrument or product, the tissue removed and the deepest layer reached.
• Describe the wound after treatment and the dressing applied.
• Explain why debridement was needed that day, or say that it was not needed.
• Write each note fresh for that visit.

For coders

• Confirm dead tissue was present and removed.
• Decide non-selective versus selective first, then check the depth.
• Check units against the documented area where area applies.
• Make sure 97602 is billed only once per session and not paired with NPWT codes.
• Check add-on pairings for the surgical codes.
• Look for conflicting codes on the same wound and date.
• Send notes back to the clinician when information is missing.

For billing managers

• Block more than one unit of 97597 or 97602 per session.
• Block add-on codes billed without their matching main code.
• Track denials by code, especially 97602.
• Keep payer policies up to date.

For practice leaders

• Use a note template that prompts for every element above, while leaving room to describe what actually happened.
• Review a sample of debridement claims regularly.
• Treat denials as feedback on documentation, not just billing.

Preparing for an Audit

• Review your own claims regularly, comparing code, units, measurements, technique and depth with the note.
• Make sure each note can be understood on its own.
• Keep measurement methods consistent from visit to visit.
• Avoid copied notes.
• Respond fully and on time to record requests.

Pre-Bill Checklist

1. Is there a wound-specific note for this date of service?
2. Does the note show dead tissue present before treatment?
3. Is the technique named specifically?
4. Was the method selective or non-selective?
5. Is the deepest tissue layer debrided stated?
6. Are measurements recorded where area affects billing?
7. Does the code match the method and depth?
8. Is 97602 billed only once, with no add-on?
9. Is each surgical add-on paired with its correct main code?
10. Are there any conflicting codes for the same wound and date?
11. Is medical necessity clear?
12. Are modifiers used only where the note supports them?

Frequently Asked Questions

What is CPT 97602?

It is the code for non-selective debridement, performed without anesthesia, including topical applications, wound assessment and instructions for ongoing care, per session.

What methods are billed with 97602?

Examples in the descriptor are wet-to-moist dressings, enzymatic methods and abrasion. Larval therapy is also commonly listed.

Is 97602 billed per wound or per session?

Per session.

Does wound size change the billing for 97602?

No. There are no area limits and no add-on.

Is there an add-on code for 97602?

No.

Are 97605 and 97606 add-ons for 97602?

No. They are negative pressure wound therapy codes.

Does Medicare pay 97602 separately?

For physician services, 97602 has a bundled status on the Medicare Physician Fee Schedule and is generally not paid separately. Other settings and payers may differ.

Is enzymatic debridement billed with 97597 or 97602?

97602.

Can 97602 and 97597 be billed for the same wound on the same day?

No.

Can 97602 be billed with 11042 for the same wound?

No.

Can 97602 be billed for one wound and 97597 for another wound on the same day?

Yes, when each wound is documented separately. Modifier 59 is used to show they are distinct.

Can a dressing change be billed as 97602?

Not unless meaningful debridement of dead tissue is documented.

Are dressings billed separately with 97602?

No. They are included.

Can 97597 be billed more than once in a session?

No. Extra area is billed with 97598.

Which add-on goes with 11043?

11046.

Which add-on goes with 11044?

11047.

If a wound is deep, must a surgical code be used?

No. The code depends on the tissue actually debrided. If only surface material was removed, the selective codes apply.

Can nail or callus care be billed as 97602?

No. They have their own codes.

Can an E/M be billed on the same day as 97602?

Only when the E/M work is significant and separate, usually with modifier 25.

Quick Reference Summary

Service	Code(s)	Key rule
Non-selective debridement	97602	Once per session, no area limits, no add-on, bundled for Medicare physician services
Selective debridement, first 20 sq cm or less	97597	Once per session
Selective debridement, each additional 20 sq cm or part thereof	97598	Only with 97597
Surgical debridement, subcutaneous tissue	11042 + 11045	Deepest layer debrided is subcutaneous tissue
Surgical debridement, muscle and/or fascia	11043 + 11046	Deepest layer debrided is muscle or fascia
Surgical debridement, bone	11044 + 11047	Deepest layer debrided is bone
NPWT, reusable equipment	97605 / 97606	50 sq cm or less / over 50 sq cm
NPWT, disposable equipment	97607 / 97608	50 sq cm or less / over 50 sq cm
Nail trimming, non-dystrophic	11719	Routine foot care rules apply
Nail trimming, dystrophic	G0127	Routine foot care rules apply
Nail debridement	11720 / 11721	1 to 5 / 6 or more
Corn or callus paring	11055 / 11056 / 11057	1 / 2 to 4 / more than 4 lesions

Final Thoughts

CPT 97602 is the code for non-selective debridement. It covers methods such as wet-to-moist dressings, enzymatic products, abrasion and larval therapy, it is billed once per session, it has no area limits and no add-on, and it is bundled for Medicare physician services. Most mistakes with 97602 come from treating it like the other debridement codes, when it works quite differently.

The comparison makes the rules easy to remember. If the method was non-selective, the code is 97602. If the method was selective and only surface tissue was removed, the code is 97597, with 97598 for extra area. If the debridement reached subcutaneous tissue, muscle, fascia or bone, the code is 11042, 11043 or 11044, with 11045, 11046 or 11047 for extra area. Wound vacuums are 97605 through 97608, and nail and callus care have their own codes.

Every claim should be backed by a note that shows where the wound is, what tissue was present, what method was used, what was removed, how deep the debridement went, how much area was treated and why it was needed. Bill only when dead tissue was actually removed, never bill two debridement code groups for the same wound on the same day, and check the current rules from CPT, Medicare and each payer before billing, since policies change over time.