D13 Benign neoplasm of other and ill-defined parts of digestive system

ICD-10-CM Code D13: Benign Neoplasm of Other and Ill-Defined Parts of Digestive System

ICD-10-CM code D13 designates a benign neoplasm located in other and ill-defined parts of the digestive system. The official terminology record classifies this active concept as a neoplastic process within the D10-D36 parent category. A separate medical coding portal lists specific subcodes extending from this base category. 1 5 6

Plain-language overview

Code D13 identifies a non-cancerous neoplastic process occurring in other and ill-defined parts of the digestive system, providing a standardized diagnostic label for this specific health condition. 1 5

What this code represents

The D13 diagnosis concept belongs to the parent category D10-D36, which covers benign neoplasms except benign neuroendocrine tumors, and the base code currently has no narrower concepts in the terminology. 1

Documentation considerations

A medical coding search portal lists D13.3 for other and unspecified parts of the small intestine, D13.5 for the extrahepatic bile ducts and gall bladder, and D13.9 for ill-defined sites within the digestive system. 6

The official terminology record includes a published abbreviation for this diagnosis, which is listed as benign neoplasm of and ill-defined parts of digestive system. 1

Coverage and utilization context

Medicare billing and coding articles for implantable infusion pumps and esophagogastroduodenoscopy include benign neoplasms of ill-defined digestive sites within their listed diagnostic references. 3 4

What the sources add

While the official terminology record establishes the active status and neoplastic process semantic type, a separate clinical research database lists D13 among gastrointestinal endoscopy disease categories evaluated by artificial intelligence systems. 1 2

The national terminology record explicitly notes that the base D13 code has no narrower concepts, whereas a separate medical coding search portal details specific clinical subcategories like D13.9 for ill-defined sites. 1 6

Sources

1. ICD-10-CM D13 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Weakly supervised end-to-end artificial intelligence in gastrointestinal endoscopy — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Implantable Infusion Pump (A56695) — cms.gov; accessed 2026-07-27.
4. Article - Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy (A57063) — cms.gov; accessed 2026-07-27.
5. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
6. ICD-10 code: Benign neoplasm of other and ill-defined parts of digestive system — gesund.bund.de; accessed 2026-07-27.