ICD-10 Code L70.3 – Acne tropica (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L70.3 – Acne tropica
What it is
L70.3 identifies acne tropica, a form of acne associated with hot, humid climates and heavy sweating. Use it when the record specifically names this diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Acne tropica is typically described as acneiform eruptions in exposed or sweat-prone areas, often worsened by heat, humidity, and occlusion.
When to use this code
Use L70.3 when the clinician documents acne tropica, tropical acne, or an equivalent term. It is appropriate when the note clearly distinguishes this condition from common acne, folliculitis, or other acneiform disorders.
If the diagnosis is uncertain or the record only says “acne,” check documentation before assigning this code. Code the documented condition as written.
Do not use for
Do not use this code for unspecified acne, acne vulgaris, or other acne variants unless acne tropica is documented. Do not assume it from climate, sweating, or rash alone.
Coding tip
Match the exact clinician wording; if “tropica” is not stated, verify the diagnosis before coding L70.3.