ICD-11 classes
01 Certain infectious or parasitic diseases
Predominantly sexually transmitted infections
1A61 — Early syphilis

ICD-11 1A61 — Early syphilis

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.

The diagnosis includes nothing.

It excludes 1 item.

  • Early congenital syphilis (1A60)

Diagnosis with code 1A61 contains 8 clarifying diagnoses:

  1. 1A61.0 — Primary genital syphilis
  2. 1A61.1 — Primary anal syphilis
  3. 1A61.2 — Primary syphilis of other sites
  4. 1A61.3 — Secondary syphilis of skin or mucous membranes
  5. 1A61.4 — Secondary syphilis of other sites
  6. 1A61.5 — Latent early syphilis
  7. 1A61.Y — Other specified early syphilis
  8. 1A61.Z — Early syphilis, unspecified

The diagnosis is coded elsewhere:

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