ICD-10 Code K05.319 – Chronic periodontitis, localized, unspecified severity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.319 – Chronic periodontitis, localized, unspecified severity
What it is
K05.319 identifies chronic periodontal inflammation affecting a localized area of the mouth, with the severity not documented. Use it when the record confirms chronic periodontitis but does not specify mild, moderate, or severe.
Clinical signs
Typical findings include inflamed gingiva, periodontal pocketing, attachment loss, and localized bone loss around affected teeth. Clinical features vary; refer to documentation.
When to use this code
Use this code when the dentist or periodontist documents chronic periodontitis limited to one area and does not state the severity. It is appropriate for progress notes, problem lists, or claims where localization is clear. If the site or severity is missing, check documentation.
Do not use for
Do not use it for generalized periodontitis or for gingivitis without periodontal attachment loss. If the condition is acute, unspecified, or documented with a different severity level, choose the more accurate code.
Coding tip
Verify both localization and severity before assigning K05.319.