Infective dermatitis

This code represents an inflammatory skin condition caused by an infectious agent, such as bacteria, fungi, viruses, or parasites. It manifests as a rash, redness, itching, and sometimes blistering or oozing, directly resulting from an infection rather than an allergic or irritant reaction.

Apply this code when documentation clearly indicates dermatitis that is infectious in origin. This includes conditions like impetigo, fungal skin infections (e.g., tinea), or viral exanthems where the primary diagnosis is the resulting dermatitis. Ensure the physician's notes specify the infectious nature of the dermatitis.

• Do not use this code for dermatitis due to external irritants or allergens; those fall under contact dermatitis codes.
• If the specific infectious agent is identified, consider coding it as a secondary diagnosis to provide greater specificity.
• Distinguish from eczema (L20-L30.2), which is typically non-infectious, unless secondarily infected.