A51.4
Non-billableOther secondary syphilis
A51.4 is the ICD-10-CM code for Other secondary syphilis. It is a non-billable category code — use a more specific child code such as A51.41 for billing.
A00-B99 Certain infectious and parasitic diseases
No additional coding notes for this code.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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