1A61.5

ICD-11 MMS 2026-01

Latent early syphilis

Description

A disease caused by an infection with the gram-negative bacteria Treponema pallidum pallidum. This disease is characterised by serologic proof of infection without symptoms of disease less than 1 year after secondary syphilis. Transmission is commonly by sexual contact.

Index terms

  • Latent early syphilis
  • latent syphilis, positive serology, early or less than 2 years after infection

Exclusions from above levels

  • 1A60.Z – Early congenital syphilis
  • FA11.2 – Arthropathy following genitourinary infection
  • GC02.1 – Nonspecific and nongonococcal urethritis
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  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1A61.0 – Primary genital syphilis
  • 1A61.1 – Primary anal syphilis
  • 1A61.2 – Primary syphilis of other sites
  • 1A61.3 – Secondary syphilis of skin or mucous membranes
  • 1A61.4 – Secondary syphilis of other sites
  • 1A61.Y – Other specified early syphilis
  • 1A61.Z – Early syphilis, unspecified

Foundation entity

Latent early syphilis – http://id.who.int/icd/entity/1768103550

Allowed postcoordination axes

Part of: 1A61: Early syphilis › 01: Certain infectious or parasitic diseases