ICD-10 Code L89.521 – Pressure ulcer of left ankle, stage 1 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.521 – Pressure ulcer of left ankle, stage 1
What it is
This code identifies a pressure ulcer on the left ankle that is limited to intact skin with nonblanchable redness. Use it when documentation clearly states stage 1 and the left ankle site.
Clinical signs
Typical findings include localized redness over the left ankle that does not turn white when pressed, with skin still intact. Clinical features vary; refer to documentation if the stage or location is unclear.
When to use this code
Use L89.521 when the record documents a stage 1 pressure injury or pressure ulcer at the left ankle. It is appropriate when the provider specifies the stage and laterality, or when wound assessment supports that exact description.
If the note only says “pressure injury” without stage, or if another site is documented, you should not assign this code. Check documentation for any more specific pressure ulcer stage or location.
Do not use for
Do not use this code for ulcers caused by venous, arterial, diabetic, or traumatic conditions. It also should not be used when the lesion is open, deeper than stage 1, or the left ankle is not documented.
Coding tip
Confirm both laterality and stage in the wound note before coding, because pressure ulcer codes are site- and stage-specific.