ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 1 A00-B99 Certain infectious and parasitic diseases /
A50-A64 Infections with a predominantly sexual mode of transmission /
A51 Early syphilis
Billable ICD-10-CM Code A51.5
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A51.5
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Early syphilis, latent
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| Syphilis (acquired) without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after infection. |