ICD-10 Code L98.A19 – Non-pressure chronic ulcer of unspecified upper arm (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A19 – Non-pressure chronic ulcer of unspecified upper arm
What it is
This code identifies a chronic, non-pressure ulcer located on the upper arm when the exact side or more specific site is not documented. Use it for a persistent skin break that is not caused by pressure.
Clinical signs
Typical findings include an open sore with delayed healing, possible drainage, and surrounding skin changes. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states a chronic ulcer of the upper arm and does not specify right, left, or a more exact location. It also fits when the ulcer is documented as non-pressure and chronic, but the provider has not given further detail. Check documentation if the site is unclear.
Do not use for
Do not use this code for pressure ulcers, acute wounds, or ulcers with a documented more specific upper-arm location. If the side or exact site is known, code the more specific option instead.
Coding tip
If the note says “upper arm” without laterality, this unspecified code is appropriate; otherwise, code to the documented side.