523.5
ICD-9-CMThis code represents a chronic, progressive inflammatory disease affecting the supporting structures of the teeth, specifically the periodontium. It involves the destruction of alveolar bone, periodontal ligament, and cementum, leading to tooth mobility and eventual tooth loss if untreated. It is a severe form of periodontal disease.
Use this code for documented cases of advanced periodontal disease characterized by significant bone loss and deep periodontal pockets. Documentation should clearly indicate a diagnosis of periodontosis or severe periodontitis with extensive tissue destruction. This code is appropriate when the condition has progressed beyond gingivitis or milder forms of periodontitis.
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