Late congenital neurosyphilis, unspecified

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Late congenital neurosyphilis, unspecified

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from the A50-A64 section Infections with a predominantly sexual mode of transmission (A50-A64)

Excludes1 - never coded here

nonspecific and nongonococcal urethritis (N34.1)
Reiter's disease (M02.3-)

Excludes2 - not included here

human immunodeficiency virus [HIV] disease (B20)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Lues, luetic
Lesion > syphilitic
Disease, diseased > venereal
Treponema pallidum infection
Disease, diseased > syphilitic
Treponematosis > due to > T. pallidum
Infection, infected, infective > specific
Disease, diseased > sexually transmitted > syphilis
Infection, infected, infective > Treponema pallidum
Neurosyphilis > juvenile
Neurosyphilis > congenital
Syphilis, syphilitic > central nervous system > juvenile
Syphilis, syphilitic > central nervous system > congenital

Codes in the same group

Code	Description	Status
A50.41	Late congenital syphilitic meningitis	Valid
A50.42	Late congenital syphilitic encephalitis	Valid
A50.43	Late congenital syphilitic polyneuropathy	Valid
A50.44	Late congenital syphilitic optic nerve atrophy	Valid
A50.45	Juvenile general paresis	Valid
A50.49	Other late congenital neurosyphilis	Valid