A50.4
Late congenital neurosyphilis [juvenile neurosyphilis]
A50.4 is a non-billable ICD-10-CM code header for late congenital neurosyphilis [juvenile neurosyphilis]. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are A50.40 Late congenital neurosyphilis, unspecified; A50.41 Late congenital syphilitic meningitis; A50.42 Late congenital syphilitic encephalitis; A50.43 Late congenital syphilitic polyneuropathy and 3 more. Its coding notes include a Use additional code instruction, 3 Excludes1 entries and 6 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
- code to identify any associated mental disorder
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- Hutchinson's triad (A50.53)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (6 notes)
- human immunodeficiency virus [HIV] disease (B20)
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- diseases generally recognized as communicable or transmissible
More specific codes under A50.4 7
- A50.40Late congenital neurosyphilis, unspecifiedBillable
- A50.41Late congenital syphilitic meningitisBillable
- A50.42Late congenital syphilitic encephalitisBillable
- A50.43Late congenital syphilitic polyneuropathyBillable
- A50.44Late congenital syphilitic optic nerve atrophyBillable
- A50.45Juvenile general paresisBillable
- A50.49Other late congenital neurosyphilisBillable