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ICD-10-CM
ICD-10-CM codes
Neoplasms (C00-D49)
C30-C39
C31
C31.9
ICD-10-CM code "C31.9": Malignant neoplasm of accessory sinus, unspecified (2024)
Overview
ICD-10 Code
C31.9
Description
Malignant neoplasm of accessory sinus, unspecified
Hierarchy
Neoplasms (C00-D49)
Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)
Malignant neoplasm of accessory sinuses (C31)
Malignant neoplasm of accessory sinus, unspecified (C31.9)
Billable status
ICD-10-CM Billable code
Excludes
Neoplasms (C00-D49)
Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)
Type 1
mesothelioma (C45.-)
Malignant neoplasm of accessory sinuses (C31)
Malignant neoplasm of accessory sinus, unspecified (C31.9)
Includes
Neoplasms (C00-D49)
Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)
Includes
malignant neoplasm of middle ear
Malignant neoplasm of accessory sinuses (C31)
Malignant neoplasm of accessory sinus, unspecified (C31.9)