Late congenital syphilitic meningitis

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 syphilitic meningitis

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.

Arachnitis
Lues, luetic
Arachnoiditis
Fever > spinal
Perimeningitis
Febris, febrile
Hydromeningitis
Leptomeningitis
Pachymeningitis
Effusion > spinal
Fever > meningeal
Meningoradiculitis
Sepsis > meningeal
Effusion > meninges
Lesion > syphilitic
Effusion > cerebrospinal
Fever > viral hemorrhagic
Disease, diseased > venereal
Treponema pallidum infection
Disease, diseased > syphilitic
Treponematosis > due to > T. pallidum
Infection, infected, infective > specific
Infection, infected, infective > cerebrospinal
Inflammation, inflamed, inflammatory > meninges
Inflammation, inflamed, inflammatory > arachnoid
Inflammation, inflamed, inflammatory > pia mater
Inflammation, inflamed, inflammatory > dura mater
Infection, infected, infective > brain > membranes
Disease, diseased > sexually transmitted > syphilis
Infection, infected, infective > Treponema pallidum
Inflammation, inflamed, inflammatory > brain > membrane
Inflammation, inflamed, inflammatory > spinal > membrane
Inflammation, inflamed, inflammatory > cerebral > membrane
Infection, infected, infective > spinal cord NOS > meninges
Inflammation, inflamed, inflammatory > membranes of brain or spinal cord
Meningitis > syphilitic > congenital
Syphilis, syphilitic > meningitis > congenital
Syphilis, syphilitic > meningovascular > congenital

Codes in the same group

Code	Description	Status
A50.40	Late congenital neurosyphilis, unspecified	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