ICD-10 Code L89.520 – Pressure ulcer of left ankle, unstageable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.520 – Pressure ulcer of left ankle, unstageable
What it is
This code identifies a pressure ulcer located on the left ankle whose depth cannot be determined because the base is covered by slough or eschar. Use it when the ulcer is documented as unstageable.
Clinical signs
Typical findings include a pressure-related wound over the left ankle with obscured tissue loss. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states a pressure ulcer of the left ankle and the stage is unstageable. It also fits when necrotic tissue prevents assessment of the wound base. If the documentation names a different stage or site, choose the documented code.
Do not use for
Do not use this code for ulcers that are not pressure-related or for ankle wounds with a documented stage. Check documentation if the laterality or location is unclear.
Coding tip
Confirm both the left ankle location and the unstageable stage before assigning L89.520.