Malignant melanoma of skin of trunk, except scrotum

This code signifies a malignant neoplasm originating from melanocytes, specifically located on the skin of the patient's trunk. This includes areas like the back, chest, abdomen, and flanks, but explicitly excludes the scrotum. It represents a serious form of skin cancer.

Apply this code when documentation confirms a diagnosis of malignant melanoma affecting the trunk, excluding the scrotum. This diagnosis is typically supported by pathology reports confirming malignancy and specifying the anatomical site. Use this code for primary diagnoses of melanoma in this specific location.

• Ensure the documentation clearly specifies "trunk" and explicitly excludes the scrotum.
• Differentiate from benign melanocytic nevi or other non-melanoma skin cancers.
• Consider additional codes for laterality (if applicable and documented) and any associated metastases.