2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Syphilis And Other Venereal Diseases 090-099 > ICD-9-CM Diagnosis 097 Other and unspecified syphilis 097 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 097.0 Late syphilis unspecified 097.0 is a specific code that can be used to specify a diagnosis 097.0 contains 2 index entries ICD-9-CM Diagnosis 097.1 Latent syphilis unspecified 097.1 is a specific code that can be used to specify a diagnosis 097.1 contains 16 index entries ICD-9-CM Diagnosis 097.9 Syphilis unspecified A contagious venereal disease caused by the spirochete TREPONEMA PALLIDUM. 097.9 is a specific code that can be used to specify a diagnosis 097.9 contains 9 index entries