ICD-10 Code L89.146 – Pressure-induced deep tissue damage of left lower back (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.146 – Pressure-induced deep tissue damage of left lower back
What it is
This code identifies a pressure-related injury affecting the deep tissue over the left lower back. It is used when the skin may still be intact, but underlying tissue damage is present.
Clinical signs
Typical findings include localized discoloration, pain, or a firm, boggy, or mushy area over the left lower back. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents deep tissue pressure damage at the left lower back site. You should also use it when the provider describes pressure injury with intact skin but clear evidence of deeper tissue involvement.
If the note only says “pressure ulcer” without specifying deep tissue damage, check documentation before assigning this code. Confirm the exact anatomic site and laterality are documented.
Do not use for
Do not use this code for superficial skin breakdown, non-pressure wounds, or unspecified pressure injuries. Check documentation if the site is not the left lower back.
Coding tip
Verify both the pressure-injury stage/type and the exact laterality before coding; do not infer deep tissue damage from redness alone.