ICD-10 Code K08.124 – Complete loss of teeth due to periodontal diseases, class IV (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.124 – Complete loss of teeth due to periodontal diseases, class IV
What it is
K08.124 identifies complete tooth loss caused by periodontal disease, class IV. Use it when documentation shows the teeth are absent because of advanced periodontal destruction, not trauma or congenital absence.
Clinical signs
Findings usually reflect a fully edentulous area with a history of severe periodontal disease. Clinical features vary; refer to documentation for evidence of periodontal origin and class IV severity.
When to use this code
Use this code when the record clearly states complete loss of teeth due to periodontal disease and specifies class IV. It may apply in dental, oral surgery, or specialty notes describing advanced periodontal damage with total tooth loss.
If the cause is not documented, or if tooth loss is from extraction, trauma, or another condition, check documentation before assigning K08.124.
Do not use for
Do not use this code for tooth loss from injury, congenital absence, or routine extraction. If periodontal cause or class IV status is unclear, check documentation.
Coding tip
Confirm both the periodontal cause and the class IV designation in the provider note before coding.