ICD-10 Code L89.133 – Pressure ulcer of right lower back, stage 3 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.133 – Pressure ulcer of right lower back, stage 3
What it is
This code identifies a pressure ulcer on the right lower back with full-thickness skin loss. Stage 3 means the wound extends into subcutaneous tissue, but not through muscle, tendon, or bone.
Clinical signs
You may see a crater-like ulcer with visible fat, slough, or undermining. Clinical features vary; refer to documentation, but stage 3 should not include exposed muscle, tendon, or bone.
When to use this code
Use L89.133 when the record clearly documents a pressure ulcer on the right lower back and specifies stage 3. You should also confirm the anatomic site and laterality match the note. If the stage is uncertain or the location is different, check documentation before coding.
Do not use for
Do not use this code for unstageable ulcers, suspected deep tissue injury, or ulcers on another body site. Do not assign it if the chart does not confirm stage 3.
Coding tip
Verify both laterality and stage together, because a mismatch usually means the code is incorrect.