C26 – Malignant neoplasm of other and ill-defined digestive organs
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of digestive organs
ICD-10-CM code
C26
- Code
C26(claims format:C26)- Description
- Malignant neoplasm of other and ill-defined digestive organs
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C15-C26 Malignant neoplasms of digestive organs
Billable codes under C26
C26 is a header code and cannot be used on claims. Choose the most specific code:
Notes for C26
Excludes1 (not coded here):
- malignant neoplasm of peritoneum and retroperitoneum (C48.-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block C15-C26
Excludes1 (not coded here):
- Kaposi's sarcoma of gastrointestinal sites (C46.4)
Excludes2 (not included here):
- gastrointestinal stromal tumors (C49.A-)
Frequently asked questions
What is ICD-10 code C26?
C26 is the ICD-10-CM code for malignant neoplasm of other and ill-defined digestive organs, in the block C15-C26 (Malignant neoplasms of digestive organs).
Is C26 a billable code?
No. C26 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.