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 523.3 Acute periodontitis View the most recent version of ICD-9-CM 523.3 Localized circumscribed purulent area of inflammation in the periodontal tissue. It is a derivative of marginal periodontitis and commonly associated with suprabony and infrabony pockets and interradicular involvements, in contrast to periapical abscess which is attributable to pulp necrosis. 523.3 is a specific code that can be used to specify a diagnosis 523.3 contains 19 index entries View the ICD-9-CM Volume 1 523.* hierarchy Alternate Terminology Acute: pericementitis pericoronitis Paradontal abscess Periodontal abscess 523.3 Excludes acute apical periodontitis (522.4) periapical abscess (522.5, 522.7)