Malignant neoplasm of other and ill-defined digestive organs (C26) ICD-10-CM
The C26 code range covers malignant neoplasm of other and ill-defined digestive organs with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- malignant neoplasm of peritoneum and retroperitoneum C48
Codes in the C26 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C26 range.
Malignant Intestinal Neoplasm
A primary or metastatic malignant neoplasm involving the small intestine, large intestine, or both. Representative examples are carcinomas, lymphomas, and sarcomas.
Malignant Splenic Neoplasm
A malignant neoplasm affecting the spleen. Representative examples include leukemias, lymphomas, and sarcomas.
About the C26 Code Range
Cancer in other or ill-defined digestive organs falls in this category.
The subdivisions distinguish an unspecified part of the intestinal tract (C26.0), the spleen (C26.1), and an ill-defined site within the digestive system (C26.9).
Questions About This Page
How many billable codes are in the C26 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C26 range classify?
The range classifies malignant neoplasm of other and ill-defined digestive organs. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
