Malignant carcinoid tumor of the sm int, unsp portion

This code signifies a neuroendocrine tumor (NET) originating in the small intestine, characterized by its malignant nature and potential for metastasis. These tumors arise from enterochromaffin cells and can secrete various hormones, leading to carcinoid syndrome in some cases. The "unspecified portion" indicates that the exact location within the small intestine (e.g., duodenum, jejunum, ileum) is not documented.

Use this code when documentation confirms a malignant carcinoid tumor of the small intestine, and the specific segment of the small intestine affected is not specified. This diagnosis is typically established through biopsy and histopathological examination. It is appropriate for initial diagnosis, treatment, and follow-up care when the primary site is confirmed as the small intestine.

• Do not use this code if the specific portion of the small intestine (e.g., duodenum, jejunum, ileum) is documented; instead, select a more specific C7A.01- subcategory.
• Always review pathology reports and operative notes for precise tumor location and malignancy status.
• Consider sequencing this code as the primary diagnosis when the carcinoid tumor is the reason for the encounter, followed by codes for any associated carcinoid syndrome (E34.0) or metastatic sites.