ICD-10 Code L30.2 – Cutaneous autosensitization (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L30.2 – Cutaneous autosensitization
What it is
L30.2 identifies cutaneous autosensitization, a skin reaction caused by an internal or distant inflammatory focus. Use it when the record describes an autoeczematization or id reaction pattern rather than a primary skin disease.
Clinical signs
Typical findings include an itchy, eczematous eruption, often widespread and secondary to another dermatitis or infection. Clinical features vary; refer to documentation.
When to use this code
Use L30.2 when the clinician documents cutaneous autosensitization, autoeczematization, or an id reaction as the diagnosis. It is appropriate when the rash is described as a secondary response to another site of inflammation, and the note supports that relationship. Check documentation if the underlying cause is unclear.
Do not use for
Do not use this code for a primary eczema, contact dermatitis, or nonspecific rash without documentation of autosensitization. If the provider names a different dermatitis type, code that condition instead.
Coding tip
Capture the underlying source when documented, because L30.2 alone may not fully explain the encounter.