Aggressive periodontitis, generalized, unspecified severity

This code describes a widespread, rapidly progressing form of periodontitis characterized by significant attachment loss and bone destruction in a generalized pattern, affecting most teeth. The severity of the disease is not specified in the clinical documentation.

Apply this code when the provider explicitly diagnoses "aggressive periodontitis, generalized" without specifying whether it is mild, moderate, or severe. Documentation should indicate rapid progression and extensive involvement of the periodontium.

• Only use this code when the severity is truly unspecified; otherwise, select a more specific code (e.g., K05.221, K05.222, K05.223).
• Distinguish from chronic periodontitis (K05.3-) based on the rapid progression and typical age of onset often noted in aggressive forms.
• Ensure the documentation clearly states "generalized" involvement, as opposed to localized aggressive periodontitis (K05.21-).