A50.4
Late congenital neurosyphilis [juvenile neurosyphilis]
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
A50-A64block
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 8 same parent — A50
A50.0 Early congenital syphilis, symptomatic category A50.1 Early congenital syphilis, latent A50.2 Early congenital syphilis, unspecified A50.3 Late congenital syphilitic oculopathy category A50.5 Other late congenital syphilis, symptomatic category A50.6 Late congenital syphilis, latent A50.7 Late congenital syphilis, unspecified A50.9 Congenital syphilis, unspecified
Subordinate codes 7
A50.40 Late congenital neurosyphilis, unspecified A50.41 Late congenital syphilitic meningitis A50.42 Late congenital syphilitic encephalitis A50.43 Late congenital syphilitic polyneuropathy A50.44 Late congenital syphilitic optic nerve atrophy A50.45 Juvenile general paresis A50.49 Other late congenital neurosyphilis
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.