Carcinoma in situ of other and unspecified male genital organs

This code signifies the presence of carcinoma in situ (CIS) within male genital organs other than the prostate, testis, or penis, or when the specific site is not documented. CIS represents a pre-invasive form of cancer where abnormal cells are confined to the epithelial layer and have not spread to surrounding tissue.

Assign this code when pathology reports confirm carcinoma in situ of the epididymis, seminal vesicle, spermatic cord, or other specified male genital organs not covered by more specific codes. It is also appropriate when the documentation indicates CIS of an unspecified male genital organ. Documentation must clearly state "carcinoma in situ" and the affected male genital organ.

• Differentiate from invasive carcinoma; this code is strictly for in situ lesions.
• Avoid using if a more specific ICD-9-CM code exists for the documented site (e.g., penis, testis, prostate).
• Ensure the pathology report explicitly states "carcinoma in situ" to support this diagnosis.