Wound vs. Ulcer: The Podiatry Documentation Details That Decide Whether Debridement Gets Paid

Wound care is one of the most valuable services a podiatry practice provides, and one of the easiest to lose money on. The care is usually right. The note is what fails. A missing depth measurement, an ulcer coded like a wound, or a debridement code that doesn't match the tissue removed is enough to turn a paid claim into a denial, a downcode, or a refund request after an audit.

It's also a major focus at the 54th Annual Goldfarb Clinical Conference in Philadelphia, November 5 to 8. The APMA Coding Seminar on Thursday afternoon devotes a big share of its agenda to wound vs. ulcer coding and ulcer debridement documentation, alongside the coding changes coming in 2027. Here's a practical look at where wound care claims break down and how to build a workflow that holds up.

Wound and ulcer are not interchangeable

The two words get used loosely in conversation, but they code very differently.

• A wound generally describes an acute injury, such as a laceration, puncture, or surgical wound. These are coded from the injury chapter of ICD-10 (S codes).
• An ulcer is a chronic, non-healing breakdown of tissue. It's coded by type, location, laterality, and severity: non-pressure chronic ulcers of the lower limb (L97), pressure ulcers (L89), and diabetic foot ulcers, which pair the diabetes code (for example, E11.621) with the L97 code that describes the site and depth.

When the note says "wound" but the diagnosis is an ulcer, the claim and the record tell two different stories. Payers and auditors notice. Another common miss is a diabetic foot ulcer billed without the L97 code that identifies site and severity, or with a severity level the exam doesn't support.

Debridement is coded by what was removed, not by how deep the ulcer is

This is where a lot of podiatry revenue leaks out.

• Surgical debridement (11042 to 11047) is tiered by the deepest tissue actually removed: subcutaneous tissue, muscle or fascia, or bone. Add-on codes cover each additional 20 sq cm.
• Selective debridement (97597 and 97598) covers removal of devitalized tissue without going into deeper layers.

An ulcer can extend to bone while the debridement only removes subcutaneous tissue. In that case, the subcutaneous code is the correct one. Billing the deeper code based on ulcer depth instead of tissue removed is one of the most frequent audit findings in wound care.

Surface area matters too. When several ulcers are debrided to the same depth, their areas are added together. Different depths are reported separately. Without measurements in the note, add-on codes can't be supported.

What a defensible debridement note includes

A clean note answers every question an auditor would ask, without anyone having to call the office.

• Ulcer location, laterality, and type
• Measurements before debridement (length x width x depth)
• Tissue condition before treatment (necrotic tissue, slough, eschar, granulation)
• Depth of tissue removed and the instrument used
• Total surface area debrided
• Medical necessity, response to prior treatment, and progress toward healing
• Plan of care and treatment frequency

Medicare reviewers look for evidence that the ulcer is improving. Repeated debridement with no measurable progress in the record invites a closer look. Most practices at Goldfarb are in Pennsylvania, New Jersey, Delaware, and Maryland, which all fall under the same Medicare Administrative Contractor (Novitas, Jurisdiction L). Reviewing that contractor's wound care coverage policy now is time well spent before the 2027 updates take effect.

Why this matters more in 2027

The 2027 coding updates and continued Medicare payment pressure mean every fixable documentation miss costs more than it used to. We covered the proposed 2027 changes in detail in Podiatry Coding for 2026 and 2027: More Painful than Plantar Fasciitis. When rates are flat or falling, getting paid correctly the first time on the services already being performed is the fastest way to protect revenue.

Build the rules into the workflow, not into memory

The fix isn't asking providers to remember more coding rules between patients. It's a system that prompts for the right details at the point of care and checks the claim before it goes out. ADS supports podiatry practices with:

• Podiatry-specific EHR templates that prompt for measurements, tissue type, and depth of tissue removed
• AI dictation built into ADS software so providers capture the full detail by talking through the exam, without extra typing (adsc.com/ai)
• An AI Rules Engine that flags missing L97 pairings, unsupported add-on codes, and depth mismatches before a claim is submitted
• Diagnosis code tracking that works with a practice's current billing service, or full revenue cycle management through ADSRCM

Podiatry practices using ADS see the difference in their day-to-day operations:

"We're operating more profitably and efficiently than we ever thought possible. Our expedited workflow enables us to focus on patients and their healthcare."

Clark Larsen, DPM, Rocky Mountain Foot and Ankle

More podiatry results are on the ADS customer success stories page.

Frequently asked questions

What's the difference between wound and ulcer coding in podiatry?

A wound is typically an acute injury coded from the ICD-10 injury chapter. An ulcer is a chronic, non-healing lesion coded by type, site, laterality, and severity, such as L97 for non-pressure chronic ulcers of the lower limb.

How is debridement depth determined for coding?

By the deepest level of tissue actually removed during the procedure, not by the depth of the ulcer itself.

Can multiple ulcers be combined for debridement coding?

Yes, when they're debrided to the same depth. Their surface areas are added together. Ulcers debrided to different depths are reported separately.

Visit ADS at Booth 202

The ADS team will be in the exhibit hall at the 54th Annual Goldfarb Clinical Conference on Friday, November 6 and Saturday, November 7, from 9:30 am to 4:00 pm at the Hilton Philadelphia City Avenue. Stop by to meet Gene Spirito, Adam Andrew, and Kyle Frommelt and see how ADS helps podiatry practices close documentation gaps and get paid faster. For more on what to watch heading into the show, read Heading to the Goldfarb Clinical Conference? Here Is What Podiatry Practices Need to Watch in Q4.

Can't make it to Philadelphia? Book a Free Podiatry Billing Review, visit adsc.com/podiatry, or call 1-800-899-4237 ext. 2264.