A50.49 Other late congenital neurosyphilis
The ICD-10-CM code for Other late congenital neurosyphilis is A50.49 (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 A50.49:
- Tabes, tabetic › juvenile
- Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) › syphilitic, congenital
- Meningoencephalocele › syphilitic › congenital
- Tabes, tabetic › dorsalis › juvenile
- Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › neurosyphilis › juvenile
- Palsy › cerebral (congenital) › syphilitic › congenital
- Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › neurosyphilis › juvenile › with behavioral disturbance
Inclusion Terms
- Juvenile tabes dorsalis
U.S. Hospital Utilization
A50.49 appeared in too few sampled U.S. inpatient stays in 2023 to report a national estimate (AHRQ suppresses counts of 10 or fewer) — a rare inpatient 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