ICD-10 Code L89.103 – Pressure ulcer of unspecified part of back, stage 3 (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.103 – Pressure ulcer of unspecified part of back, stage 3
What it is
This code identifies a pressure ulcer on an unspecified area of the back with full-thickness skin loss. The wound extends into the subcutaneous tissue, but bone, tendon, and muscle are not exposed.
Clinical signs
Look for a localized pressure injury on the back with a deep open ulcer, slough, or visible fat. Clinical features vary; refer to documentation, especially for staging and wound depth.
When to use this code
Use this code when the provider documents a stage 3 pressure ulcer and the back is the only specified location, without a more exact site. It also fits when the record clearly supports stage 3 but does not identify a precise back subsite. If the stage or location is unclear, check documentation before coding.
Do not use for
Do not use this code for stage 1, stage 2, unstageable, or deep tissue pressure injuries. Do not use it when the ulcer is documented at a specific back site that has a more exact code.
Coding tip
Match both the stage and the anatomic site exactly as documented, and verify that “unspecified part of back” is truly intended before assigning this code.