ICD Code L23.9

ICD code L23.9 is allergic contact dermatitis from an unspecified cause.

1. Presence of localized skin inflammation characterized by redness, swelling, and itching

2. Development of vesicles, papules, or plaques at the site of contact

3. History of exposure to a potential allergen or irritant

4. Delayed onset of symptoms, typically appearing hours to days after exposure

5. Absence of systemic symptoms such as fever or malaise

6. No identification of a specific causative allergen despite clinical suspicion

7. Exclusion of other dermatologic conditions such as irritant contact dermatitis, atopic dermatitis, or infectious etiologies

Relevant CPT codes that may be used to treat ICD code L23.9 include:

- 99202–99215 (Evaluation and Management office visits)

- 95044 (Patch or application tests)

- 96372 (Therapeutic, prophylactic, or diagnostic injection)

- 11900–11901 (Injection, intralesional)

- 96910 (Photochemotherapy; tar and ultraviolet B [Goeckerman treatment] or petrolatum and ultraviolet B)

- 96912 (Photochemotherapy; psoralens and ultraviolet A [PUVA])

- 96542 (Chemotherapy injection, subcutaneous or intramuscular; hormonal anti-neoplastic)

- 99217–99220 (Observation care services)

CPT code selection should be based on the specific services rendered for L23.9.

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