Malignant neoplasm of cortex of unspecified adrenal gland

This code signifies a primary cancerous tumor originating in the outer layer (cortex) of an adrenal gland, where the specific side (left or right) of the affected gland is not documented. These tumors can lead to hormonal imbalances due to overproduction of adrenal hormones, or present as an adrenal mass discovered incidentally.

Apply this code when the medical record clearly indicates a malignant neoplasm of the adrenal cortex, but the laterality (left or right adrenal gland) is not specified by the provider. This is often used for initial diagnosis when imaging or pathology reports confirm malignancy of the adrenal cortex without specifying the side.

• Ensure documentation explicitly states "adrenal cortex" and "malignant" for accurate coding.
• Avoid using this code if laterality (left or right) is documented; instead, choose the more specific C74.01 or C74.02.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter, followed by any codes for associated symptoms or hormonal syndromes.