ICD-10 Code K08.123 – Complete loss of teeth due to periodontal diseases, class III (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.123 – Complete loss of teeth due to periodontal diseases, class III
What it is
This code identifies complete tooth loss caused by periodontal disease, specifically class III severity. Use it when the record clearly documents total loss of teeth linked to periodontal destruction.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include advanced periodontal breakdown, missing teeth, and a history consistent with severe periodontal disease leading to complete edentulism.
When to use this code
Use K08.123 when the provider documents complete loss of teeth due to periodontal disease and specifies class III. Code from the documented diagnosis, not from assumptions about dental status alone.
If the chart only states tooth loss without a periodontal cause or class designation, check documentation before assigning this code. Confirm that the condition is not due to trauma, caries, or another cause.
Do not use for
Do not use this code for partial tooth loss, unspecified edentulism, or tooth loss from nonperiodontal causes. Check documentation if the cause or severity is unclear.
Coding tip
Match the code to both the cause and the documented class; if either is missing, query the record before coding.