ICD-10 Code K05.30 – Chronic periodontitis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K05.30 – Chronic periodontitis, unspecified
What it is
K05.30 identifies chronic periodontitis without a stated subtype. It refers to long-standing inflammatory disease of the supporting tissues around the teeth, with loss of attachment and bone support.
Clinical signs
Typical findings include inflamed gums, periodontal pockets, bleeding on probing, and progressive attachment loss. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents chronic periodontitis but does not specify extent, severity, or other qualifying details. It also fits when the clinician notes periodontal disease with chronic features and no more specific diagnosis is available. Check documentation if the chart distinguishes localized or generalized disease.
Do not use for
Do not use it for gingivitis alone or for acute periodontal conditions. Avoid this code when documentation supports a more specific periodontal diagnosis.
Coding tip
Code from the dentist’s exact wording and look for laterality, extent, or severity details before defaulting to K05.30.