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A50.49

Other late congenital neurosyphilis

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 9 never code together
A50.4code
Excludes1
  • Hutchinson's triad (A50.53)A50.53
A50-A64block
Excludes1
  • nonspecific and nongonococcal urethritis (N34.1)N34.1
  • Reiter's disease (M02.3-)M02.3-
Excludes2
  • human immunodeficiency virus [HIV] disease (B20)B20
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 4
A50.4code
Use additional code
  • code to identify any associated mental disorder
A50.49code
Inclusion terms
  • Juvenile tabes dorsalis
A00-B99chapter
Includes
  • diseases generally recognized as communicable or transmissible
Use additional code
  • code to identify resistance to antimicrobial drugs (Z16.-)Z16.-
Index entries leading here 5
  • Palsy G83.9
  • Meningoencephalocele — see also Encephalocele
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) F03.90
  • Tabes, tabetic A52.10
  • Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent) G91.9
    • syphilitic, congenital A50.49
Alongside this code 6 same parent — A50.4
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
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
A50.4
Block
A50-A64
Siblings
6

Present FY2024–FY2027.