A66

Non-billable

Yaws

A66 is the ICD-10-CM code for Yaws. It is a non-billable category code — use a more specific child code such as A66.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
10
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Includes

  • bouba
  • frambesia (tropica)
  • pian

Frequently asked questions

What is ICD-10 code A66?
A66 is the ICD-10-CM code for "Yaws". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A66 a billable code?
No — A66 is a non-billable header code. Use a more specific child code (such as A66.0) for billing.
What are the subcodes of A66?
A66 has 10 more specific child codes, including A66.0, A66.1, A66.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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