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2008 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.* > 2008 ICD-9-CM Diagnosis 523.31 Aggressive periodontitis, localized  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 523.31 can be accessed here. 523.31 is a specific code that can be used to specify a diagnosis 523.31 contains 4 index entries View the ICD-9-CM Volume 1 523.* hierarchy 523.31 also known as: Periodontal abscess Index entries containing 523.31: Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9 periodontal (parietal) 523.31 apical 522.5 Infection, infected, infective (opportunistic) 136.9 periodontal 523.31 tooth, teeth 522.4 periodontal 523.31 Periodontitis (chronic) (complex) (compound) (simplex) 523.40 aggressive 523.30 localized 523.31