1A61ICD-11 MMS 2026-01
Early syphilis
Description
A disease caused by an infection with the gram-negative bacteria Treponema pallidum pallidum, including primary and secondary stages of syphilis, and early latent syphilis of less than 2 years duration. This disease is characterised by a single chancre in the primary stage, and diffuse rash in the secondary stage. Transmission is commonly by sexual contact.
Excludes
1A60.Z– Early congenital syphilis
Exclusions from above levels
Child codes
1A61.0– Primary genital syphilis1A61.1– Primary anal syphilis1A61.2– Primary syphilis of other sites1A61.3– Secondary syphilis of skin or mucous membranes1A61.4– Secondary syphilis of other sites1A61.5– Latent early syphilis1A61.Y– Other specified early syphilis1A61.Z– Early syphilis, unspecified
Sibling codes
Foundation entity
Allowed postcoordination axes
Part of: 01: Certain infectious or parasitic diseases