ICD-10 Code L89.320 – Pressure ulcer of left buttock, unstageable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.320 – Pressure ulcer of left buttock, unstageable
What it is
This code identifies a pressure ulcer on the left buttock whose true depth cannot be staged because the wound base is covered by slough or eschar. It tells you the location and that the stage is currently unstageable.
Clinical signs
Typical findings include localized skin breakdown over the left buttock with necrotic tissue obscuring the wound bed. Clinical features vary; refer to documentation for whether the ulcer has drainage, odor, surrounding redness, or pain.
When to use this code
Use L89.320 when the record clearly states a pressure ulcer of the left buttock and the provider documents it as unstageable. This is appropriate when the base cannot be assessed because slough or eschar blocks visualization. If the site is different or the ulcer is staged, choose the documented code instead.
Do not use for
Do not use this code for a pressure injury with a documented stage, or for wounds on another anatomic site. Check documentation if the lesion is a skin tear, moisture-associated damage, or another ulcer type.
Coding tip
Confirm both the laterality and the word “unstageable” in the provider note before assigning L89.320.