1A61.1

ICD-11 MMS 2026-01

Primary anal syphilis

Index terms

  • Primary anal syphilis
  • Anal syphilitic chancre
  • primary syphilis of anus

Exclusions from above levels

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

Sibling codes

  • 1A61.0 – Primary genital syphilis
  • 1A61.2 – Primary syphilis of other sites
  • 1A61.3 – Secondary syphilis of skin or mucous membranes
  • 1A61.4 – Secondary syphilis of other sites
  • 1A61.5 – Latent early syphilis
  • 1A61.Y – Other specified early syphilis
  • 1A61.Z – Early syphilis, unspecified

Foundation entity

Primary anal syphilis – http://id.who.int/icd/entity/1847647511

Allowed postcoordination axes

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