ICD-10 Code L89.321 – Pressure ulcer of left buttock, stage 1 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.321 – Pressure ulcer of left buttock, stage 1
What it is
This code identifies a pressure ulcer on the left buttock with intact skin and persistent redness that does not blanch. It reflects early tissue injury from prolonged pressure or shear.
Clinical signs
Look for localized nonblanchable erythema over the left buttock, with skin still unbroken. Clinical features vary; refer to documentation if the area is painful, firm, warm, or cooler than surrounding tissue.
When to use this code
Use L89.321 when the provider documents a stage 1 pressure ulcer specifically on the left buttock. The note should support pressure-related skin damage and the stage assigned. If laterality, site, or stage is unclear, check documentation.
Do not use for
Do not use this code for a pressure injury at another site, a deeper stage, or an unstageable ulcer. Do not use it for simple redness without documentation of a pressure ulcer.
Coding tip
Confirm both laterality and stage in the record before assigning L89.321.