ICD-10 Code A66.8 – Latent yaws (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A66.8 – Latent yaws
What it is
Use this code for yaws infection that is present but not causing active skin or bone lesions. It indicates a latent stage, meaning the patient has evidence of past infection without current symptoms.
Clinical signs
Clinical features vary; refer to documentation. Latent yaws is often identified by a history of prior yaws or positive serology without signs of active disease.
When to use this code
Assign this code when the provider documents latent yaws, asymptomatic yaws, or a past yaws infection without active manifestations. Use it when the record clearly distinguishes latent infection from primary, secondary, or tertiary disease. Check documentation if the stage is not specified.
Do not use for
Do not use this code for active yaws lesions, bone involvement, or other specified stages of yaws. If the chart only says “history of yaws” without current latent infection, check documentation before coding.
Coding tip
Confirm the documented stage of yaws, because latent disease is coded differently from active or unspecified infection.