ICD-10 Code L30.3 – Infective Dermatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L30.3 – Infective dermatitis
What it is
L30.3 identifies infective dermatitis, an inflammatory skin condition associated with infection. Use it when documentation specifically names infective dermatitis rather than a broader rash or eczema.
Clinical signs
Typical findings include inflamed, irritated skin with signs of infection such as crusting, oozing, or secondary bacterial involvement. Clinical features vary; refer to documentation.
When to use this code
Use L30.3 when the provider documents infective dermatitis or an equivalent diagnosis in the assessment. It may fit cases where dermatitis is clearly described as infected, but the record should support that wording. If the note only says “dermatitis” or “rash,” check documentation before assigning this code.
Do not use for
Do not use L30.3 for noninfectious eczema, contact dermatitis, or unspecified skin irritation. Check documentation if the record does not clearly identify infection.
Coding tip
Assign L30.3 only when the clinician links the dermatitis to infection; otherwise, code the documented dermatitis type.