Aggressive periodontitis, localized, unspecified severity

This code signifies a severe, rapidly progressing form of periodontal disease affecting specific teeth or areas of the mouth. It is characterized by significant attachment loss and bone destruction, often in otherwise healthy individuals, with the severity not explicitly documented.

Apply this code when documentation indicates aggressive periodontitis that is confined to certain teeth or areas, and the clinician has not specified whether it is mild, moderate, or severe. Supporting documentation includes clinical notes detailing rapid bone loss, deep probing depths, and localized distribution without a clear severity assessment.

• Do not use if the documentation specifies generalized aggressive periodontitis; select a code from K05.22-.
• Ensure the documentation explicitly states "aggressive periodontitis" and "localized" to support this code.
• If severity (mild, moderate, severe) is documented, choose the appropriate subcategory (K05.211, K05.212, K05.213).