A51 - Early syphilis
A51.4 - Other secondary syphilis
A51.41 - Secondary syphilitic meningitis
A51.42 - Secondary syphilitic female pelvic disease
A51.43 - Secondary syphilitic oculopathy
A51.44 - Secondary syphilitic nephritis
A51.45 - Secondary syphilitic hepatitis
A51.46 - Secondary syphilitic osteopathy
A51.49 - Other secondary syphilitic conditions