ICD-10 Code L81.9 – Disorder of pigmentation, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L81.9 – Disorder of pigmentation, unspecified
What it is
L81.9 identifies an unspecified disorder affecting skin pigmentation. Use it when documentation notes abnormal skin color change but does not name a specific pigment disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe hyperpigmentation, hypopigmentation, or mixed color change without a more specific diagnosis.
When to use this code
Use this code when the clinician documents a pigmentation disorder but does not specify the cause or type. It also fits cases where the note only states “disorder of pigmentation” or “pigment change” and no further detail is available.
Do not use for
Do not use L81.9 when the chart identifies a specific condition such as melasma, vitiligo, or postinflammatory pigmentation change. Check documentation if the abnormal color change is part of another diagnosed skin disorder.
Coding tip
Query the provider for a more specific diagnosis before defaulting to this unspecified code.