A50.4
A50.4: Late congenital neurosyphilis [juvenile neurosyphilis]
Non-billable headerICD-10-CM
A50.4 is a non-billable header ICD-10-CM code for late congenital neurosyphilis [juvenile neurosyphilis]. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- Hutchinson's triad (A50.53)
Use additional code
Add a secondary code to capture the detail described below.
- code to identify any associated mental disorder
Other codes that can never be billed with A50.4
Their own Excludes1 notes name this code, so the conflict is not listed above.
- G94Other disorders of brain in diseases classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A50.4
7 child codes. Green means billable.
- 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
Other codes under A50
- A50.0Early congenital syphilis, symptomatic
- A50.1Early congenital syphilis, latent
- A50.2Early congenital syphilis, unspecified
- A50.3Late congenital syphilitic oculopathy
- A50.5Other late congenital syphilis, symptomatic
- A50.6Late congenital syphilis, latent
- A50.7Late congenital syphilis, unspecified
- A50.9Congenital syphilis, unspecified