A53.0
ICD-10BillableLatent syphilis, unspecified as early or late
Official ICD-10-CM descriptor (FY2026)
Latent syphilis, unspecified as early or late
A53.0 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Latent syphilis NOS
- Positive serological reaction for syphilis
Related codes in A53
Where this code sits
- Parent code
- A53
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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.