The ICD-9 code for prostate cancer is 185, according to Health Research Funding. The official designation for the 185 code is the billable medical code for a malignant neoplasm of the prostate.
As the Centers for Disease Control and Prevention explains, the ICD-9 code is the designation given to a condition in the ninth revision of the International Classification of Diseases. Health Research Funding explains that metastatic prostate cancer is an advanced form of prostate cancer that spreads to other parts of the body, such as the blood, tissue and bones. Symptoms vary based on the spread of the cancer but may include back pains, difficulty urinating and blood in the urine.