ICD-10 Code K08.422 – Partial loss of teeth due to periodontal diseases, class II (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.422 – Partial loss of teeth due to periodontal diseases, class II
What it is
This code identifies partial tooth loss caused by periodontal disease, with class II severity. Use it when the record shows teeth lost from gum and supporting tissue disease, not from trauma or other dental causes.
Clinical signs
Clinical features vary; refer to documentation. Records may note missing teeth, periodontal bone loss, or a history of tooth loss attributed to chronic periodontal disease.
When to use this code
Use this code when the provider documents partial loss of teeth due to periodontal disease and specifies class II. It supports claims where the missing teeth are linked to periodontal destruction rather than extraction, injury, or congenital absence. Check documentation if the cause is unclear.
Do not use for
Do not use it for tooth loss from trauma, caries, congenital absence, or unspecified dental loss. If the chart does not clearly link the loss to periodontal disease, check documentation.
Coding tip
Verify both the periodontal cause and the class designation before assigning K08.422.