ICD-10 Code A66.2 – Other early skin lesions of yaws (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A66.2 – Other early skin lesions of yaws
What it is
A66.2 identifies early skin manifestations of yaws that do not fit the more specific lesion categories. Use it for documented early yaws skin disease when the record does not name another yaws subtype.
Clinical signs
Clinical features vary; refer to documentation. Early yaws commonly presents with skin lesions such as papules, plaques, or ulcerative changes, but you should code only what the provider documents.
When to use this code
Use A66.2 when the diagnosis states early skin lesions of yaws and no more specific yaws code is documented. It is appropriate for confirmed or clearly documented suspected early cutaneous yaws findings in the record. If the note names a different yaws presentation, choose that code instead.
Do not use for
Do not use this code for late yaws, neurosyphilis, or other treponemal infections. Check documentation if the lesion type is unspecified or if another infectious cause is recorded.
Coding tip
Code the most specific yaws diagnosis documented, and query the provider if the record only says “yaws” without lesion stage.