ICD-10 Code L89.101 – Pressure ulcer of unspecified part of back, stage 1 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.101 – Pressure ulcer of unspecified part of back, stage 1
What it is
This code identifies a pressure ulcer on an unspecified part of the back that is stage 1. Stage 1 means intact skin with persistent nonblanchable redness over a pressure point.
Clinical signs
Look for localized redness that does not blanch when pressed, with skin still unbroken. Clinical features vary; refer to documentation for exact location and staging details.
When to use this code
Use L89.101 when the record documents a stage 1 pressure ulcer on the back but does not specify the exact back site. It is appropriate for intact skin with early pressure injury findings. If the chart later identifies a more specific back location, code that documented site instead.
Do not use for
Do not assign this code for nonpressure redness, moisture-associated skin damage, or a pressure ulcer with skin breakdown beyond stage 1. Check documentation if the stage or site is unclear.
Coding tip
Confirm both the stage and the anatomic site in the provider note before coding.