Benign neoplasm of duodenum

This code signifies the presence of a non-cancerous growth originating in the duodenum, the first section of the small intestine. These benign neoplasms are typically slow-growing and do not metastasize to other parts of the body. They may be discovered incidentally during endoscopy or imaging studies performed for other reasons.

Assign this code when documentation clearly identifies a benign tumor or polyp located specifically within the duodenum. This diagnosis is often supported by endoscopic findings, biopsy results confirming benign histology, or imaging reports. It is appropriate when the lesion is confirmed as non-malignant and not a carcinoid tumor.

• Ensure the pathology report explicitly states "benign" and specifies the duodenum as the site.
• Do not use this code if the tumor is identified as a carcinoid tumor; refer to D3A.010.
• If the specific type of benign neoplasm (e.g., adenoma, leiomyoma) is documented, consider if a more specific code within the D13 series is available.