D40.9
ICD-10-CMNeoplasm of uncertain behavior of male genital organ, unspecified
This code signifies a tumor originating in an unspecified male genital organ, where the pathologist cannot definitively classify it as benign or malignant. It indicates that further diagnostic workup is required to determine the tumor's biological behavior.
Apply this code when pathology reports describe a neoplasm of the male genital system as "uncertain behavior" or "unknown malignant potential," and the specific organ involved is not documented. It is appropriate for initial encounters when the definitive nature or exact anatomical site within the male genital system is pending.
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