A50.9 Congenital syphilis, unspecified
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The ICD-10-CM code for Congenital syphilis, unspecified is A50.9 (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 A50.9:
- Syphilis, syphilitic (acquired) › congenital
U.S. Hospital Utilization
- An estimated 2,840 U.S. inpatient stays in 2023 included A50.9 among the documented diagnoses.
- 270 stays listed it as the principal diagnosis.
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
References
Cite This Page
Reference A50.9 with the canonical source and edition:
A50.9 — Congenital syphilis, unspecified. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/A50.9
Canonical URL: https://icd10codingpro.com/codes/A50.9