ICD-10 Code L89.509 – Pressure ulcer of unspecified ankle, unspecified stage (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.509 – Pressure ulcer of unspecified ankle, unspecified stage
What it is
This code identifies a pressure ulcer located at the ankle when the side is not specified and the stage is not documented. Use it for a pressure injury caused by prolonged pressure over the ankle area.
Clinical signs
Findings may include localized skin breakdown, discoloration, tenderness, or an open ulcer over the ankle. Clinical features vary; refer to documentation for laterality and stage details.
When to use this code
Use this code when the record clearly documents a pressure ulcer of the ankle but does not state whether it is right or left. It is also appropriate when the stage is not recorded or cannot be determined from the available note. Confirm that the lesion is a pressure ulcer, not a venous, diabetic, or traumatic wound.
Do not use for
Do not use this code if the ulcer site is elsewhere on the foot or leg, or if the documentation identifies a different cause of skin breakdown. Check documentation if the stage or ankle laterality is available.
Coding tip
Query the provider for laterality and stage when the note is incomplete, because more specific pressure ulcer codes may apply.