ICD10Check
CheckerBrowseOpen

C18.9

✓ Billable

Malignant neoplasm of colon, unspecified

Neoplasms (C00-D49)

Check This Code

Also Known As

Malignant neoplasm of large intestine NOS

❌ Excludes1

inherited from C18

Rules from parent category C18: Malignant neoplasm of colon

  • • malignant carcinoid tumors of the colon (C7A.02-)

🧪 Validate Combinations

Add C18.9 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeC18.9
BillableYes
ParentC18
CategoryNeoplasms (C00-D49)
Excludes11 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)