ICD-10 Code L89.124 – Pressure ulcer of left upper back, stage 4 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.124 – Pressure ulcer of left upper back, stage 4
What it is
This code identifies a stage 4 pressure ulcer located on the left upper back. Stage 4 means full-thickness skin and tissue loss, with exposed deeper structures.
Clinical signs
Expect an open ulcer with extensive tissue loss, often with visible muscle, tendon, or bone. Clinical features vary; refer to documentation for depth, drainage, and any associated necrosis.
When to use this code
Use this code when the provider documents a pressure ulcer on the left upper back and clearly states stage 4. The site and stage must both be supported in the record. If the location is described differently or the stage is not confirmed, check documentation before assigning L89.124.
Do not use for
Do not use this code for pressure injuries at other back locations or for ulcers with an unspecified stage. Do not use it if the wound is documented as a different ulcer type, such as venous, diabetic, or traumatic.
Coding tip
Confirm both laterality and exact anatomic site in the note before coding L89.124.