ICD-10-CM > A00-B99 > A50-A64 > A51 A51 Early syphilis Non-Billable/Non-Specific Codes A51.0Primary genital syphilisA51.1Primary anal syphilisA51.2Primary syphilis of other sitesA51.3Secondary syphilis of skin and mucous membranesA51.31Condyloma latumA51.32Syphilitic alopeciaA51.39Other secondary syphilis of skinA51.4Other secondary syphilisA51.41Secondary syphilitic meningitisA51.42Secondary syphilitic female pelvic diseaseA51.43Secondary syphilitic oculopathyA51.44Secondary syphilitic nephritisA51.45Secondary syphilitic hepatitisA51.46Secondary syphilitic osteopathyA51.49Other secondary syphilitic conditionsA51.5Early syphilis, latentA51.9Early syphilis, unspecified