C15-C26Not billable, use a more specific code below
Malignant neoplasms of digestive organs (C15-C26)
chapter 2: Neoplasms
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding benign and malignant neoplasms: using the Neoplasm Table, sequencing primary and secondary sites, treatment encounters, complications, and current cancer versus personal history.
- Admission/Encounter for treatment of primary site (page 33)
- Admission/Encounter for treatment of secondary site (page 33)
- Coding and sequencing of complications (page 34)
- Primary malignancy previously excised (page 34)
- Admissions/Encounters involving antineoplastic chemotherapy, immunotherapy and radiation therapy (page 35)
- Admission/encounter to determine extent of malignancy (page 36)
- Symptoms, signs, and abnormal findings listed in Chapter 18 associated with neoplasms (page 36)
- Admission/encounter for pain control/management (page 36)
All codes under C15-C26
C15-C26 can't be used on a claim. Pick a billable code below; grey headings group them.
- C15Malignant neoplasm of esophagus
- C15.3Malignant neoplasm of upper third of esophagus
- C15.4Malignant neoplasm of middle third of esophagus
- C15.5Malignant neoplasm of lower third of esophagus
- C15.8Malignant neoplasm of overlapping sites of esophagus
- C15.9Malignant neoplasm of esophagus, unspecified
- C16Malignant neoplasm of stomach
- C16.0Malignant neoplasm of cardia
- C16.1Malignant neoplasm of fundus of stomach
- C16.2Malignant neoplasm of body of stomach
- C16.3Malignant neoplasm of pyloric antrum
- C16.4Malignant neoplasm of pylorus
- C16.5Malignant neoplasm of lesser curvature of stomach, unspecified
- C16.6Malignant neoplasm of greater curvature of stomach, unspecified
- C16.8Malignant neoplasm of overlapping sites of stomach
- C16.9Malignant neoplasm of stomach, unspecified
- C17Malignant neoplasm of small intestine
- C17.0Malignant neoplasm of duodenum
- C17.1Malignant neoplasm of jejunum
- C17.2Malignant neoplasm of ileum
- C17.3Meckel's diverticulum, malignant
- C17.8Malignant neoplasm of overlapping sites of small intestine
- C17.9Malignant neoplasm of small intestine, unspecified
- C18Malignant neoplasm of colon
- C18.0Malignant neoplasm of cecum
- C18.1Malignant neoplasm of appendix
- C18.2Malignant neoplasm of ascending colon
- C18.3Malignant neoplasm of hepatic flexure
- C18.4Malignant neoplasm of transverse colon
- C18.5Malignant neoplasm of splenic flexure
- C18.6Malignant neoplasm of descending colon
- C18.7Malignant neoplasm of sigmoid colon
- C18.8Malignant neoplasm of overlapping sites of colon
- C18.9Malignant neoplasm of colon, unspecified
- C19Malignant neoplasm of rectosigmoid junction
- C20Malignant neoplasm of rectum
- C21Malignant neoplasm of anus and anal canal
- C21.0Malignant neoplasm of anus, unspecified
- C21.1Malignant neoplasm of anal canal
- C21.2Malignant neoplasm of cloacogenic zone
- C21.8Malignant neoplasm of overlapping sites of rectum, anus and anal canal
- C22Malignant neoplasm of liver and intrahepatic bile ducts
- C22.0Liver cell carcinoma
- C22.1Intrahepatic bile duct carcinoma
- C22.2Hepatoblastoma
- C22.3Angiosarcoma of liver
- C22.4Other sarcomas of liver
- C22.7Other specified carcinomas of liver
- C22.8Malignant neoplasm of liver, primary, unspecified as to type
- C22.9Malignant neoplasm of liver, not specified as primary or secondary
- C23Malignant neoplasm of gallbladder
- C24Malignant neoplasm of other and unspecified parts of biliary tract
- C24.0Malignant neoplasm of extrahepatic bile duct
- C24.1Malignant neoplasm of ampulla of Vater
- C24.8Malignant neoplasm of overlapping sites of biliary tract
- C24.9Malignant neoplasm of biliary tract, unspecified
- C25Malignant neoplasm of pancreas
- C25.0Malignant neoplasm of head of pancreas
- C25.1Malignant neoplasm of body of pancreas
- C25.2Malignant neoplasm of tail of pancreas
- C25.3Malignant neoplasm of pancreatic duct
- C25.4Malignant neoplasm of endocrine pancreas
- C25.7Malignant neoplasm of other parts of pancreas
- C25.8Malignant neoplasm of overlapping sites of pancreas
- C25.9Malignant neoplasm of pancreas, unspecified
- C26Malignant neoplasm of other and ill-defined digestive organs
- C26.0Malignant neoplasm of intestinal tract, part unspecified
- C26.1Malignant neoplasm of spleen
- C26.9Malignant neoplasm of ill-defined sites within the digestive system
C15-C26 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to C15-C26
Notes on these codes point to C15-C26.
- Z80.0 Includes: Conditions classifiable to C15-C26
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Esophageal Cancer
The esophagus is a hollow tube that carries food and liquids from your throat to your stomach. Early esophageal cancer usually does not cause symptoms. Later, you may have symptoms such as:
Read more about esophageal cancer on MedlinePlus