A50.1 Early congenital syphilis, latent
The ICD-10-CM code for Early congenital syphilis, latent is A50.1 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- A50-A64: Infections with a predominantly sexual mode of transmission (A50-A64)
- Category A50
- 38 codes (33 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to A50.1:
- Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations)
- Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations) › serology positive
- Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations) › negative spinal fluid test
Inclusion Terms
- Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after birth.
U.S. Hospital Utilization
- An estimated 185 U.S. inpatient stays in 2023 included A50.1 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
HIV Infections (TOC entry)a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19
Infectious agents causing diseases in other chapters (TOC)b. Infectious agents as the cause of diseases classified to other chapters ................................. 22
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026