Malignant neoplasm of unspecified epididymis

This code signifies a primary cancerous tumor originating in the epididymis, a coiled tube located at the back of the testicle that stores and carries sperm. The "unspecified" designation indicates that the specific epididymis (left or right) affected by the malignancy is not documented.

Use this code when the medical record clearly states a diagnosis of malignant neoplasm of the epididymis, but does not specify laterality. Documentation supporting this code would include pathology reports confirming malignancy and physician notes indicating the tumor's location in the epididymis without further laterality detail.

• Avoid using this code if laterality (left or right epididymis) is documented; instead, select the more specific code.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter.
• Ensure the pathology report confirms malignancy, as benign neoplasms of the epididymis are coded differently.