2024 ICD-10-CM Diagnosis Code C00.4

Malignant neoplasm of lower lip, inner aspect

  • C00.4 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 C00.4 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C00.4 – other international versions of ICD-10 C00.4 may differ.

Applicable To

  • Malignant neoplasm of buccal aspect of lower lip
  • Malignant neoplasm of frenulum of lower lip
  • Malignant neoplasm of mucosa of lower lip
  • Malignant neoplasm of oral aspect of lower lip

The following code(s) above C00.4 contain annotation back-references

 that may be applicable to C00.4:

  • C00-D49  Neoplasms
  • C00  Malignant neoplasm of lip

Approximate Synonyms

  • Cancer, lower lip, inner aspect
  • Primary malignant neoplasm of inner aspect of lower lip
  • Primary squamous cell carcinoma of inner aspect of lower lip
  • Squamous cell carcinoma, inner aspect of lower lip

ICD-10-CM C00.4 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 C00.4 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