Convert ICD-10 Code A51.1 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
A51.1 Primary anal syphilis		091.1 Primary anal syphilis

ICD-10 to ICD-9 crosswalk for code A51.1 - primary anal syphilis based on the most recent General Equivalence Mappings (GEMS) information.