ICD-10 Code K08.409 – Partial loss of teeth, unspecified cause, unspecified class (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.409 – Partial loss of teeth, unspecified cause, unspecified class
What it is
K08.409 identifies partial loss of teeth when the cause is not documented and the tooth class is not specified. Use it for missing teeth without enough detail for a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record notes one or more absent teeth, with no clear cause such as trauma, periodontal disease, or congenital absence.
When to use this code
Use this code when the provider documents partial tooth loss but does not identify the reason or whether the missing teeth are permanent or deciduous. It also fits when the note confirms partial edentulism and no further detail is available. Check documentation before assigning a more specific code.
Do not use for
Do not use it when the cause of tooth loss is documented, such as trauma, periodontal disease, or congenital absence. Avoid it if the record specifies complete tooth loss or another dental condition.
Coding tip
Query for the cause and tooth class if the chart only says “missing teeth,” because a more specific code may be available.