2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Neoplasms 140-239 > Malignant Neoplasm Of Bone, Connective Tissue, Skin, And Breast 170-175 > ICD-9-CM Diagnosis 175 Malignant neoplasm of male breast A rare malignant tumor of the breast, affecting mostly older men. It accounts for less than 1% of all malignancies in men. The most common histologic type is invasive ductal carcinoma. Most patients are treated with mastectomy. -- 2004 175 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 175.0 Malignant neoplasm of nipple and areola of male breast 175.0 is a specific code that can be used to specify a diagnosis ICD-9-CM Diagnosis 175.9 Malignant neoplasm of other and unspecified sites of male breast 175.9 is a specific code that can be used to specify a diagnosis