ICD-10 Code K00.1 – Supernumerary teeth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K00.1 – Supernumerary teeth
What it is
K00.1 identifies extra teeth beyond the normal dental complement. Use it when documentation states supernumerary teeth, extra teeth, or an additional tooth count.
Clinical signs
Clinical features vary; refer to documentation. Findings may include an extra erupted tooth, delayed eruption of adjacent teeth, crowding, or incidental discovery on dental imaging.
When to use this code
Use K00.1 when the provider documents supernumerary teeth as the diagnosis, whether the extra tooth is erupted, impacted, or found on exam or imaging. You may also use it when the record describes an extra tooth causing crowding or eruption delay.
If the note only mentions an abnormal tooth count without naming the condition, check documentation before coding. Code the condition only when the diagnosis is clearly supported in the record.
Do not use for
Do not use this code for retained primary teeth, missing teeth, or other dental anomalies unless supernumerary teeth are specifically documented. Check documentation if the finding is uncertain.
Coding tip
Link the code to the provider’s exact wording and avoid assuming an extra tooth from imaging alone.