ICD-10 Code K08.434 – Partial loss of teeth due to caries, class IV (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.434 – Partial loss of teeth due to caries, class IV
What it is
K08.434 identifies partial tooth loss caused by dental caries, with the remaining dentition fitting class IV. Use it when charting tooth loss from decay, not from trauma, periodontal disease, or congenital absence.
Clinical signs
Clinical features vary; refer to documentation. Typical records note missing teeth attributed to caries, with enough remaining teeth to place the patient in class IV. You should confirm the cause and the documented tooth-loss class.
When to use this code
Use this code when the provider documents partial loss of teeth due to caries and specifies class IV. It fits dental or medical records that clearly link the missing teeth to decay. If the class is not stated, check documentation before assigning K08.434.
Do not use for
Do not use this code for tooth loss from trauma, periodontal disease, or congenital absence. If caries is not the documented cause, or the class is unclear, do not assume K08.434.
Coding tip
Verify both the cause and the class in the provider note before coding.