Benign carcinoid tumor of the midgut, unspecified

This code signifies a non-cancerous neuroendocrine tumor originating in the midgut, which includes the jejunum, ileum, appendix, and ascending colon. These tumors arise from enterochromaffin cells and typically grow slowly, often producing hormones that can lead to carcinoid syndrome. The "unspecified" nature indicates that the exact subsite within the midgut is not documented.

Use this code when documentation confirms a benign carcinoid tumor located in the midgut, and the specific anatomical site (e.g., jejunum, ileum) is not further specified. This diagnosis is typically established through biopsy and histopathological examination.

• Ensure documentation explicitly states "benign" or "carcinoid tumor" and specifies the midgut as the origin.
• Avoid using this code if a more specific midgut location (e.g., ileum, appendix) is documented; instead, use the appropriate D3A.09x code.
• Do not use for malignant carcinoid tumors; refer to the C7A.0xx series for those diagnoses.