C04: Malignant neoplasm of floor of mouth

C04.1: Malignant neoplasm: Lateral floor of mouth

The tissue in the body is made up of cells. With cancer, the cells multiply uncontrollably, which leads to a malignant neoplasm (abnormal growth of tissue) developing. The cancer cells can destroy the healthy tissue and spread throughout the body.

The floor of the mouth is the area between the lower jaw bone and the hyoid bone. The hyoid bone is a U-shaped structure located in the front of the neck at the top. The floor of the mouth is lined with mucous membrane. The floor of the mouth consists of connective tissue and muscles.

Please note: This ICD code may also derive from the ICD-O system. If this is the case, there are usually additional letters and numbers in addition to the code. It starts with the letter M, followed by 4 digits and then a slash. There is another digit after the slash.

If it is an ICD-O code, then this does not describe a malignant cancer in all cases. The last digit after the slash gives you more detailed information about this: