ICD-10 Code K08.429 – Partial loss of teeth due to periodontal diseases, unspecified class (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.429 – Partial loss of teeth due to periodontal diseases, unspecified class
What it is
This code identifies partial loss of teeth caused by periodontal disease when the specific class is not documented. Use it for tooth loss linked to gum and supporting tissue disease, not trauma or decay.
Clinical signs
Clinical features vary; refer to documentation. Common findings in periodontal disease include inflamed gums, periodontal pocketing, tooth mobility, and missing teeth attributed to chronic periodontal destruction.
When to use this code
Use this code when the record states partial tooth loss due to periodontal disease and does not specify the class. It also fits when the clinician documents periodontal-related tooth loss without further detail needed for classification. Check documentation if the cause of missing teeth is unclear.
Do not use for
Do not use this code for tooth loss from trauma, caries, congenital absence, or extraction unrelated to periodontal disease. If the documentation names another cause, code that condition instead.
Coding tip
Assign K08.429 only when periodontal disease is the documented cause and the class remains unspecified.