1A61 Early syphilis
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
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.
exclusions
sections/codes in this section (1A61-1A61)
- Primary genital syphilis (1A61.0)
- Primary anal syphilis (1A61.1)
- Primary syphilis of other sites (1A61.2)
- Secondary syphilis of skin or mucous membranes (1A61.3)
- Secondary syphilis of other sites (1A61.4)
- Latent early syphilis (1A61.5)
- Other specified early syphilis (1A61.Y)
- Early syphilis, unspecified (1A61.Z)
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