C17.8 – Malignant neoplasm of overlapping sites of small intestine
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of digestive organs
ICD-10-CM code
C17.8
- Code
C17.8(claims format:C178)- Description
- Malignant neoplasm of overlapping sites of small intestine
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
- Parent codes
- C17
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
C17 – Malignant neoplasm of small intestine
Excludes1 (not coded here):
- malignant carcinoid tumors of the small intestine (C7A.01)
Block C15-C26
Excludes1 (not coded here):
- Kaposi's sarcoma of gastrointestinal sites (C46.4)
Excludes2 (not included here):
- gastrointestinal stromal tumors (C49.A-)
Related codes in C17
Frequently asked questions
What is ICD-10 code C17.8?
C17.8 is the ICD-10-CM code for malignant neoplasm of overlapping sites of small intestine, in the block C15-C26 (Malignant neoplasms of digestive organs).
Is C17.8 a billable code?
Yes. C17.8 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does C17.8 belong to?
It belongs to category C17 – Malignant neoplasm of small intestine.
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.