ICD-10 Code K05.212 – Aggressive Periodontitis, Localized, Moderate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.212 – Aggressive periodontitis, localized, moderate
What it is
K05.212 identifies localized aggressive periodontitis with moderate severity. It describes rapid periodontal attachment and bone loss affecting limited sites, rather than generalized disease.
Clinical signs
Typical findings include localized periodontal pocketing, attachment loss, and alveolar bone destruction around selected teeth. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states localized aggressive periodontitis and documents moderate severity. It fits cases with site-specific periodontal destruction, not generalized involvement. Confirm the diagnosis wording and extent in the dental or periodontal note before assigning it.
Do not use for
Do not use this code for generalized periodontitis, gingivitis, or unspecified periodontal disease. If the chart does not document localized moderate aggressive periodontitis, check documentation.
Coding tip
Code only when both localization and severity are explicitly documented.