2024 ICD-10-CM Diagnosis Code C04.0

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Malignant neoplasm of anterior floor of mouth

  • C04.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM C04.0 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C04.0 – other international versions of ICD-10 C04.0 may differ.

Applicable To

  • Malignant neoplasm of anterior to the premolar-canine junction

The following code(s) above C04.0 contain annotation back-references

 that may be applicable to C04.0:

  • C00-D49  Neoplasms
  • C04  Malignant neoplasm of floor of mouth

Approximate Synonyms

  • Cancer of the floor of mouth, anterior portion
  • Primary malignant neoplasm of anterior portion of floor of mouth
  • Primary squamous cell carcinoma of anterior floor of mouth
  • Squamous cell carcinoma, anterior floor of mouth

ICD-10-CM C04.0 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 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
  • 146 Ear, nose, mouth and throat malignancy with mcc
  • 147 Ear, nose, mouth and throat malignancy with cc
  • 148 Ear, nose, mouth and throat malignancy without cc/mcc

Convert C04.0 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