A51.1 Primary anal syphilis

The following code(s) above A51.1 may contain annotation back-references that may be applicable to A51.1:

• Certain infectious and parasitic diseases (A00-B99)

Diagnosis Index

Induration, Indurated
- Chancre
-- Anus A51.1
Syphilis, Syphilitic A53.9
- Anus A52.74
-- Primary A51.1
- Primary A51.0
-- Anal A51.1