ICD-10-CM Diagnosis Code C26.9
Diagnosis Code: C26.9 (Raw: C269)
Description: Malignant neoplasm of ill-defined sites within the digestive system
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code C26.9 is designated for Malignant neoplasm of ill-defined sites within the digestive system. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.