ICD-10 Code K05.229 – Aggressive Periodontitis, Generalized, Unspecified Severity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.229 – Aggressive periodontitis, generalized, unspecified severity
What it is
K05.229 identifies generalized aggressive periodontitis when the severity is not further specified. It refers to a rapidly progressing periodontal disease affecting multiple teeth and supporting tissues.
Clinical signs
Typical findings include generalized attachment loss, periodontal pocketing, and alveolar bone loss. Clinical features vary; refer to documentation for the extent of inflammation, tooth mobility, and distribution.
When to use this code
Use this code when the provider documents generalized aggressive periodontitis and does not state mild, moderate, or severe severity. It is appropriate for periodontal evaluations, specialist notes, and problem lists that clearly identify the generalized form. Check documentation if the record only says periodontitis without the aggressive qualifier.
Do not use for
Do not use it for localized aggressive periodontitis or for chronic periodontitis. If the chart lacks the generalized designation or the severity is specified differently, select the more accurate code or check documentation.
Coding tip
Match the code to the exact periodontal wording in the record, especially the generalized pattern and unspecified severity.