ICD-10 Code K08.424 – Partial loss of teeth due to periodontal diseases, class IV (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.424 – Partial loss of teeth due to periodontal diseases, class IV
What it is
This code identifies partial tooth loss caused by periodontal disease, specifically class IV severity. Use it when the record documents tooth loss tied to periodontal destruction rather than trauma or decay.
Clinical signs
Typical findings include missing teeth with a history of periodontitis, attachment loss, and supporting bone loss. Clinical features vary; refer to documentation.
When to use this code
Use K08.424 when the provider clearly links partial loss of teeth to periodontal disease and documents class IV. It fits dental or medical records describing advanced periodontal damage with missing teeth. If the cause is not specified, check documentation.
Do not use for
Do not use this code for tooth loss from caries, trauma, congenital absence, or unspecified dental conditions. If periodontal cause or class is not documented, check documentation.
Coding tip
Confirm both the periodontal cause and class IV severity in the note before assigning this code.