D48: Neoplasm of uncertain or unknown behaviour of other and unspecified sites

D48.7: Neoplasm of uncertain or unknown behaviour: Other specified sites

When there is abnormal growth of tissue, then this is also referred to as a tumor. The tissue in the body is made up of cells. A tumor disorder involves the cells multiplying more than normal. This results in abnormal or excess tissue forming. A tumor can be benign or malignant.