ICD-10 Code L89.129 – Pressure ulcer of left upper back, unspecified stage (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L89.129 – Pressure ulcer of left upper back, unspecified stage
What it is
This code identifies a pressure ulcer on the left upper back when the stage is not documented. It applies to a localized injury from prolonged pressure over a bony area.
Clinical signs
Findings may include skin breakdown, redness, blistering, or an open wound over the left upper back. Clinical features vary; refer to documentation for the documented stage and depth.
When to use this code
Use this code when the record clearly states a pressure ulcer on the left upper back but does not specify the stage. It is also appropriate when staging has not yet been documented by the clinician.
Confirm that the site is the left upper back and not a different trunk location. If the note identifies a stage, code the staged pressure ulcer instead of an unspecified stage.
Do not use for
Do not use it for non-pressure wounds, abrasions, or skin irritation without pressure injury. Check documentation if the ulcer location or stage is unclear.
Coding tip
Verify both laterality and anatomic site, because “upper back” is specific and should not be coded from a vague trunk description.