ICD-10 Code K05.223 – Aggressive Periodontitis, Generalized, Severe (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.223 – Aggressive periodontitis, generalized, severe
What it is
K05.223 identifies generalized, severe aggressive periodontitis, a rapidly progressive form of periodontal disease affecting many teeth. Use it when documentation shows severe attachment and bone loss with a generalized pattern.
Clinical signs
Typical findings include rapid periodontal attachment loss, deep periodontal pockets, and radiographic bone destruction affecting multiple teeth. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically states aggressive periodontitis, generalized, and severe. It also fits when the dentist documents widespread rapid periodontal breakdown with severe involvement across the dentition. Check documentation if the note only says periodontitis or does not specify severity.
Do not use for
Do not use K05.223 for localized aggressive periodontitis, chronic periodontitis, or gingivitis. If the chart does not clearly support generalized severe disease, code the documented condition instead.
Coding tip
Match all three elements—aggressive, generalized, and severe—before assigning K05.223.