ICD-10 Code L89.91 – Pressure ulcer of unspecified site, stage 1 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.91 – Pressure ulcer of unspecified site, stage 1
What it is
This code identifies a pressure ulcer at an unspecified body site in stage 1. Stage 1 means intact skin with localized nonblanchable redness, usually over a bony prominence.
Clinical signs
Look for persistent redness that does not blanch when pressed, with skin still intact. Clinical features vary; refer to documentation if the site or staging is unclear.
When to use this code
Use L89.91 when the provider documents a pressure injury or pressure ulcer, stage 1, but does not specify the anatomical site. It also fits when the record confirms intact skin and stage 1 pressure damage. If the site is documented elsewhere, code the specific site instead.
Do not use for
Do not use this code for ulcers from venous, arterial, diabetic, or traumatic causes. It is also incorrect when the pressure ulcer site or stage is documented differently.
Coding tip
Check the note for exact location and stage before assigning an unspecified-site code.