ICD-10 Code L30 – Other and unspecified dermatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L30 – Other and unspecified dermatitis
What it is
L30 identifies dermatitis that is not otherwise specified or does not fit a more precise dermatitis category. Use it when the record documents dermatitis, but the type or cause is unclear.
Clinical signs
Clinical features vary; refer to documentation. Typical dermatitis may include red, itchy, inflamed, or scaly skin, but you should not infer a specific subtype without clear provider wording.
When to use this code
Use L30 when the clinician documents dermatitis without naming a more specific diagnosis, such as contact, seborrheic, or atopic dermatitis. It also applies when the note states “other” or “unspecified” dermatitis and no further detail is available.
If the chart gives a clear etiology or subtype, code that more specific condition instead. Check documentation for laterality, site, and any stated trigger or associated disorder.
Do not use for
Do not use L30 when the provider identifies a specific dermatitis type, because a more precise code may exist. Avoid it for unrelated rashes, infections, or skin disorders that are not documented as dermatitis.
Coding tip
Code from the provider’s exact wording and do not assume the dermatitis type from appearance alone.