ICD-11 classes
16 Diseases of the genitourinary system
Predominantly sexually transmitted infections
Syphilis
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.

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:

• Syphilis #78
• Early syphilis #87
• Syphilis #15321
• Early syphilis #15330
• Syphilis #20718
• Early syphilis #20727