A66.0
ICD-10BillableInitial lesions of yaws
Official ICD-10-CM descriptor (FY2026)
Initial lesions of yaws
A66.0 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Chancre of yaws
- Frambesia, initial or primary
- Initial frambesial ulcer
- Mother yaw
Related codes in A66
Where this code sits
- Parent code
- A66
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.