ICD-10 Code L89.603 – Pressure ulcer of unspecified heel, stage 3 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.603 – Pressure ulcer of unspecified heel, stage 3
What it is
This code identifies a pressure ulcer on the heel where the pressure injury extends through the full thickness of skin into the subcutaneous tissue. The heel laterality is not specified in the documentation.
Clinical signs
Stage 3 ulcers typically show full-thickness skin loss with visible fat, but no exposed bone, tendon, or muscle. You may also see slough, undermining, or tunneling; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record clearly documents a stage 3 pressure ulcer on the heel and does not specify left or right side. It is appropriate for inpatient, outpatient, or wound-care documentation when the site is the heel and staging is confirmed.
Do not assume laterality from context. If the note says sacral, ankle, or another site, choose the code that matches the documented location.
Do not use for
Do not use this code for stage 1, stage 2, unstageable, or deep tissue pressure injuries. Do not use it if the heel laterality is documented and a more specific code applies.
Coding tip
Check the wound note for both stage and exact heel laterality before assigning L89.603.