ICD-10 Code L97.40 – Non-pressure chronic ulcer of unspecified heel and midfoot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.40 – Non-pressure chronic ulcer of unspecified heel and midfoot
What it is
This code identifies a chronic skin ulcer on the heel or midfoot that is not caused by pressure. Use it when the documentation does not specify laterality or a more exact site.
Clinical signs
Typical findings include an open sore with delayed healing on the heel or midfoot. The record may note drainage, granulation tissue, or surrounding skin changes; clinical features vary, so refer to documentation.
When to use this code
Use L97.40 when the provider documents a chronic non-pressure ulcer of the heel or midfoot and does not identify left or right side. It is appropriate for outpatient, inpatient, or wound-care documentation when the site is clearly stated but laterality is missing. If the depth or severity is documented, code it as directed by the chart.
Do not use for
Do not use this code for pressure ulcers, traumatic wounds, or acute skin breaks. Check documentation if the ulcer is on a more specific foot location or if laterality is recorded.
Coding tip
Capture laterality and ulcer depth from the note, because a more specific L97 code may apply.