2024 ICD-10-CM Diagnosis Code C31.8

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Malignant neoplasm of overlapping sites of accessory sinuses

  • C31.8 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 C31.8 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of C31.8 – other international versions of ICD-10 C31.8 may differ.

The following code(s) above C31.8 contain annotation back-references

 that may be applicable to C31.8:

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

Approximate Synonyms

  • Cancer of the accessory sinus, overlapping sites
  • Overlapping malignant neoplasm of accessory sinuses

ICD-10-CM C31.8 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 C31.8 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