2026 ICD-10-CM Diagnosis Code D37.6Neoplasm of uncertain behavior of liver, gallbladder and bile ducts

AHRQ’s CCSR groups this code into broader clinical categories.

• Ampulla of Vater

  a dilation of the duodenal papilla that is the opening of the juncture of the common bile duct and the main pancreatic duct, also known as the hepatopancreatic ampulla.

• Acalculous Cholecystitis

  inflammation of the gallbladder wall in the absence of gallstones.

• Biliary Dyskinesia

  a motility disorder characterized by biliary colic, absence of gallstones, and an abnormal gallbladder ejection fraction. it is caused by gallbladder dyskinesia and/or sphincter of oddi dysfunction.

• Cholecystitis

  inflammation of the gallbladder; generally caused by impairment of bile flow, gallstones in the biliary tract, infections, or other diseases.

• Gallbladder

  a storage reservoir for bile secretion. gallbladder allows the delivery of bile acids at a high concentration and in a controlled manner, via the cystic duct to the duodenum, for degradation of dietary lipid.

• Gallbladder Diseases

  diseases of the gallbladder. they generally involve the impairment of bile flow, gallstones in the biliary tract, infections, neoplasms, or other diseases.

• Gallbladder Emptying

  a process whereby bile is delivered from the gallbladder into the duodenum. the emptying is caused by both contraction of the gallbladder and relaxation of the sphincter mechanism at the choledochal terminus.

• Gallbladder Neoplasms

  tumors or cancer of the gallbladder.

• Hep G2 Cells

  a human liver tumor cell line used to study a variety of liver-specific metabolic functions.

• Hepatoblastoma

  a malignant neoplasm occurring in young children, primarily in the liver, composed of tissue resembling embryonal or fetal hepatic epithelium, or mixed epithelial and mesenchymal tissues. (stedman, 25th ed)

• Hemangioendothelioma

  a neoplasm derived from blood vessels, characterized by numerous prominent endothelial cells that occur singly, in aggregates, and as the lining of congeries of vascular tubes or channels. hemangioendotheliomas are relatively rare and are of intermediate malignancy (between benign hemangiomas and conventional angiosarcomas). they affect men and women about equally and rarely develop in childhood. (from stedman, 25th ed; holland et al., cancer medicine, 3d ed, p1866)

• Hemangioendothelioma, Epithelioid

  a tumor of medium-to-large veins, composed of plump-to-spindled endothelial cells that bulge into vascular spaces in a tombstone-like fashion. these tumors are thought to have borderline aggression, where one-third develop local recurrences, but only rarely metastasize. it is unclear whether the epithelioid hemangioendothelioma is truly neoplastic or an exuberant tissue reaction, nor is it clear if this is equivalent to kimura's disease (see angiolymphoid hyperplasia with eosinophilia). (segen, dictionary of modern medicine, 1992)

• Angiolymphoid Hyperplasia with Eosinophilia

  solitary or multiple benign cutaneous nodules comprised of immature and mature vascular structures intermingled with endothelial cells and a varied infiltrate of eosinophils, histiocytes, lymphocytes, and mast cells.

Anatomical sites in the Table of Neoplasms that reference this code family.

Bile Duct Diseases

Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.

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