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ICD-10 diagnosis code

A50.4 Late congenital neurosyphilis [juvenile neurosyphilis]

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A50.4 is the ICD-10 code for Late congenital neurosyphilis [juvenile neurosyphilis]. It is a four-character subcategory of A50 (Congenital syphilis), the most specific level in the WHO edition. It belongs to the block A50–A64 (Infections with a predominantly sexual mode of transmission) in Chapter I, Certain infectious and parasitic diseases.

Code type
Subcategory (4 characters)
Chapter
I · A00–B99
Classification
WHO ICD-10, 2019 version

What A50.4 includes

Conditions and terms that are coded here.

  • Dementia paralytica juvenilis
  • Juvenile:
    • general paresis
    • tabes dorsalis
    • taboparetic neurosyphilis
  • Late congenital syphilitic:

What A50.4 excludes

Conditions that look similar but belong under another code.

Coding notes

  • Use additional code, if desired, to identify any associated mental disorder.

A50.4 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

A50.4Sen medfödd neurosyfilis [juvenil neurosyfilis]

NorwayICD-10-NO

A50.4Medfødt nevrosyfilis

DenmarkICD-10-DK

DA504Sen medfødt neurosyfilis

FinlandICD-10-FI

A50.4Myöhäinen synnynnäinen hermostokuppa

GermanyICD-10-GM

A50.4Konnatale spätauftretende Neurosyphilis [Juvenile Neurosyphilis]

FranceICD-10-FR

A50.4Syphilis congénitale nerveuse tardive [neurosyphilis juvénile]

NetherlandsICD-10-NL

A50.4late congenitale neurosyfilis [juveniele neurosyfilis]

United StatesICD-10-CM

Listed through more specific codes:

  • A50.40Late congenital neurosyphilis, unspecified
  • A50.41Late congenital syphilitic meningitis
  • A50.42Late congenital syphilitic encephalitis
  • A50.43Late congenital syphilitic polyneuropathy
  • A50.44Late congenital syphilitic optic nerve atrophy
  • A50.45Juvenile general paresis
  • A50.49Other late congenital neurosyphilis

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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