2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Gingival And Periodontal Diseases 523.* > 2006 ICD-9-CM Diagnosis 523.5 Periodontosis View the most recent version of ICD-9-CM 523.5 523.5 is a specific code that can be used to specify a diagnosis 523.5 contains 6 index entries View the ICD-9-CM Volume 1 523.* hierarchy  Index entries containing 523.5: Paradentosis 523.5 Parodontosis 523.5 Periclasia 523.5 Periodontoclasia 523.5 Periodontosis 523.5 Pyorrhea (alveolar) (alveolaris) degenerative 523.5