ICD-10 Code L89.300 – Pressure ulcer of unspecified buttock, unstageable (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.300 – Pressure ulcer of unspecified buttock, unstageable
What it is
This code identifies a pressure ulcer on the buttock when the side is not specified and the wound cannot be staged because the base is covered by slough or eschar. Use it when the record supports an unstageable pressure injury.
Clinical signs
Typical findings include localized skin breakdown over the buttock with full-thickness tissue loss that cannot be fully assessed. Clinical features vary; refer to documentation.
When to use this code
Use L89.300 when the provider documents a pressure ulcer of the buttock and does not identify right or left. Choose it when the ulcer is unstageable because the wound bed is obscured and the stage cannot be determined.
It is appropriate for admission, progress, or wound care notes that clearly support pressure-related injury at this site. If the documentation is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for non-pressure skin breakdown, moisture-associated dermatitis, or ulcers at another anatomical site. Do not use it if the side is documented and a more specific code is available.
Coding tip
Confirm both the buttock location and the unstageable status in the provider note before coding.