ICD-10 Code L90.8 – Other atrophic disorders of skin (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L90.8 – Other atrophic disorders of skin
What it is
L90.8 identifies other atrophic skin disorders not classified elsewhere. Use it for documented skin thinning, loss of tissue, or related atrophic changes when a more specific code is not available.
Clinical signs
Findings may include visibly thin, fragile, or depressed skin with reduced tissue bulk. Clinical features vary; refer to documentation and avoid assuming a cause without provider support.
When to use this code
Use L90.8 when the record clearly describes an atrophic disorder of the skin and no more specific ICD-10-CM code fits. It is appropriate for coded diagnoses such as localized skin atrophy or unspecified atrophic skin change when documented that way.
If the note names a different underlying condition, code that condition instead or first, as directed by the record. Check documentation when the description is vague or the cause is not stated.
Do not use for
Do not use this code for pressure ulcers, scars, or generalized wasting unless the provider documents skin atrophy specifically. Do not assign it when a more specific skin disorder code is available.
Coding tip
Code the documented skin atrophy itself, and query if the note only says “thin skin” without a clear diagnosis.