2025 ICD-10-CM Diagnosis Code K00.1

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Supernumerary teeth

  • K00.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM K00.1 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of K00.1 – other international versions of ICD-10 K00.1 may differ.

Applicable To

  • Distomolar
  • Fourth molar
  • Mesiodens
  • Paramolar
  • Supplementary teeth

Type 2 Excludes

  • supernumerary roots (K00.2)

The following code(s) above K00.1 contain annotation back-references

 that may be applicable to K00.1:

  • K00-K95  Diseases of the digestive system
  • K00  Disorders of tooth development and eruption

Approximate Synonyms

  • Supernumerary tooth

Clinical Information

  • An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption.
  • Supernumerary tooth, any tooth in addition to the normal permanent and primary dentition

ICD-10-CM K00.1 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 011 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face, mouth and neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face, mouth and neck diagnoses or laryngectomy without cc/mcc
  • 157 Dental and oral diseases with mcc
  • 158 Dental and oral diseases with cc
  • 159 Dental and oral diseases without cc/mcc

Convert K00.1 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to K00.1:

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