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C26.9 - Malignant neoplasm of ill-defined sites within the digestive system


The ICD 10 Code for Malignant neoplasm of ill-defined sites within the digestive system is listed as C26.9.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: C26.9
Description: Malignant neoplasm of ill-defined sites within the digestive system
  • Malignant neoplasm of alimentary canal or tract NOS
  • Malignant neoplasm of gastrointestinal tract NOS
  • Excludes1: malignant neoplasm of abdominal NOS (C76.2)
  • malignant neoplasm of intra-abdominal NOS (C76.2)
  • Malignant neoplasm of respiratory and intrathoracic organs (C30-C39)
  • Includes: malignant neoplasm of middle ear
  • Excludes1: mesothelioma (C45.-)
Diagnostic Related Groups
(MS-DRG v30.0)
374 - Digestive Malignancy W Mcc
375 - Digestive Malignancy W Cc
376 - Digestive Malignancy W/o Cc/mcc
Chapter Neoplasms (C00-D49)
Block Malignant neoplasms of digestive organs (C15-C26)
Parent C26 - Malignant neoplasm of other and ill-defined digestive organs
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 159.8 - Malignant neoplasm of other sites of digestive system and intra-abdominal organs (approximate)
ICD 9 Dx Code: 159.9 - Malignant neoplasm of ill-defined sites within the digestive organs and peritoneum (approximate)
ICD-10-CM Siblings (same level / similar specificity) of C26.9:
C26.0 - Malignant neoplasm of intestinal tract, part unspecified
C26.1 - Malignant neoplasm of spleen