Secondary syphilis of skin and mucous membranes

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

A51.31 Condyloma latum
A51.32 Syphilitic alopecia
A51.39 Other secondary syphilis of skin

What has happened to this code

Every change the publisher made, from 2012 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.

FY2012 Added to the draft code set draft Secondary syphilis of skin and mucous membranes

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)

Codes in the same group

Code	Description	Status
A51.0	Primary genital syphilis	Valid
A51.1	Primary anal syphilis	Valid
A51.2	Primary syphilis of other sites	Valid
A51.4	Other secondary syphilis	Not billable
A51.5	Early syphilis, latent	Valid
A51.9	Early syphilis, unspecified	Valid