A50.49 Other late congenital neurosyphilis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Juvenile tabes dorsalis

Applies from A50.4 Late congenital neurosyphilis [juvenile neurosyphilis]

Excludes1 (never code together)

• Hutchinson's triad (A50.53)

Use additional code

• code to identify any associated mental disorder

MS-DRG index

Defines the logic of DRG(s) 097-099 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 090.49 Other juvenile neurosyphilis (approximate)

Code annotations containing back-references to A50.49

Back-references to A50.49

• Type 1 Excludes: G94 Other disorders of brain in diseases classified elsewhere ("encephalopathy in congenital syphilis (A50.49)")

Back-references to A50.4

• Code First: G91.4 Hydrocephalus in diseases classified elsewhere ("congenital syphilis (A50.4-)")

Back-references to A50

• Code First: J99 Respiratory disorders in diseases classified elsewhere ("congenital syphilis (A50.-)")
• Type 2 Excludes: N34 Urethritis and urethral syndrome ("urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)")
• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("congenital syphilis (A50.-)")

Diagnosis Index entries for A50.49

• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › neurosyphilis › juvenile
• Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) › in (due to) › neurosyphilis › juvenile › with behavioral disturbance
• Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) › syphilitic, congenital
• Meningoencephalocele › syphilitic › congenital
• Palsy › cerebral (congenital) › syphilitic › congenital
• Tabes, tabetic › dorsalis › juvenile
• Tabes, tabetic › juvenile

Nearby codes

• 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 (this code)
• A50.5 Other late congenital syphilis, symptomatic
• A50.51 Clutton's joints
• A50.52 Hutchinson's teeth
• A50.53 Hutchinson's triad
• A50.54 Late congenital cardiovascular syphilis