ICD-10 Code L98.A12 – Non-pressure chronic ulcer of left upper arm (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A12 – Non-pressure chronic ulcer of left upper arm
What it is
This code identifies a chronic, non-pressure ulcer located on the left upper arm. Use it for a persistent skin break or open sore that is not caused by pressure injury.
Clinical signs
Typical findings include a visible ulcer with loss of skin integrity, drainage, surrounding inflammation, or delayed healing. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states a chronic ulcer on the left upper arm and the cause is not pressure-related. It is appropriate when the site and laterality are documented. If the note only says “wound” or “lesion,” check documentation before assigning this code.
Do not use for
Do not use it for pressure ulcers, acute abrasions, or traumatic wounds without documentation of a chronic non-pressure ulcer. Do not assume laterality if the left side is not stated.
Coding tip
Confirm that the ulcer is chronic and non-pressure, and that “left upper arm” is explicitly documented before coding.