2024 ICD-10-CM Diagnosis Code C31

by

Malignant neoplasm of accessory sinuses

  • C31 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2024 edition of ICD-10-CM C31 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C31 – other international versions of ICD-10 C31 may differ.

The following code(s) above C31 contain annotation back-references

 that may be applicable to C31:

  • C00-D49  Neoplasms
  • C30-C39  Malignant neoplasms of respiratory and intrathoracic organs

Clinical Information

  • A primary or metastatic malignant neoplasm involving the paranasal sinuses.

Code 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