ICD-10 Code L97.509 – Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L97.509 – Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity
What it is
This code identifies a chronic, non-pressure ulcer on another part of an unspecified foot, when the severity is not documented. Use it when the record confirms a persistent foot ulcer but does not specify location or stage.
Clinical signs
Typical findings include an open sore on the foot that does not heal normally and shows chronic skin breakdown. Clinical features vary; refer to documentation for laterality, exact site, and any stated severity.
When to use this code
Use L97.509 when the provider documents a chronic non-pressure ulcer of the foot and the site is not more specific than “other part” or “unspecified foot.” It also fits when severity is omitted or cannot be assigned from the note. Check documentation if the ulcer is described as pressure-related, traumatic, or diabetic with a more specific code available.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers with a clearly documented more specific foot location. If the chart identifies another etiology or a more detailed ulcer code, code that instead.
Coding tip
Code the most specific ulcer site and severity documented; if those details are missing, L97.509 is the fallback.