A52.3 Neurosyphilis, unspecified
The ICD-10-CM code for Neurosyphilis, unspecified is A52.3 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- A50-A64: Infections with a predominantly sexual mode of transmission (A50-A64)
- Category A52
- 34 codes (30 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to A52.3:
- Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse)
- Syphiloma › central nervous system
- Neurosyphilis (arrested) (early) (gumma) (late) (latent) (recurrent) (relapse) › remission in (sustained)
- Gumma (syphilitic) › central nervous system
- Syphilis, syphilitic (acquired) › nervous system, central
- Syphilis, syphilitic (acquired) › central nervous system (late) (recurrent) (relapse) (tertiary)
- Gumma (syphilitic) › neurosyphilitic
- Syphilis, syphilitic (acquired) › central nervous system (late) (recurrent) (relapse) (tertiary) › remission in (sustained)
Inclusion Terms
- Gumma (syphilitic)
- Syphilis (late)
- Syphiloma
U.S. Hospital Utilization
- An estimated 4,420 U.S. inpatient stays in 2023 included A52.3 among the documented diagnoses.
- 2,020 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