ICD-10 Code L89.524 – Pressure ulcer of left ankle, stage 4 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.524 – Pressure ulcer of left ankle, stage 4
What it is
This code identifies a stage 4 pressure ulcer located on the left ankle. Stage 4 means full-thickness skin and tissue loss, with exposed deeper structures such as muscle, tendon, or bone.
Clinical signs
You may see an open ulcer with extensive tissue loss and visible deep structures. Necrotic tissue, undermining, or tunneling can be present; clinical features vary, so refer to documentation.
When to use this code
Use L89.524 when the provider documents a pressure ulcer on the left ankle and specifies stage 4. This is appropriate for wounds caused by prolonged pressure, not for other ulcer types. Confirm laterality, site, and stage in the record.
Do not use for
Do not use this code for pressure ulcers at a different ankle, foot, heel, or other body site. Also avoid it if the stage is not documented or if the wound is not a pressure ulcer.
Coding tip
Always code the exact site and stage together, and check documentation for any associated necrosis or depth details.