ICD-10-CM 2027
ICD-10 code for screening colonoscopy
Encounter for screening for malignant neoplasm of colon
Confirmed by the official ICD-10-CM index entry “encounter (with health service) (for) › colonoscopy, screening”. Page updated September 29, 2026.
About coding screening colonoscopy
The ICD-10-CM code for screening colonoscopy is Z12.11 (Encounter for screening for malignant neoplasm of colon). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z12.11.
It is also searched as colon cancer screening.
Within Z12.1 (encounter for screening for malignant neoplasm of intestinal tract), Z12.11 is specifically for encounter for screening for malignant neoplasm of colon. Related codes cover unspecified (Z12.10), rectum (Z12.12) and small intestine (Z12.13).
Use an additional code to identify any family history of malignant neoplasm (Z80.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Related Screening colonoscopy codes
Common questions about screening colonoscopy ICD-10 codes
What is the ICD-10 code for screening colonoscopy?
- Z12.11 — Encounter for screening for malignant neoplasm of colon. More specific codes apply when the documentation supports them: Z12.10, Z12.12, Z12.13.
What is the ICD-10 code for encounter for screening for malignant neoplasm of intestinal tract, unspecified?
- Z12.10 — Encounter for screening for malignant neoplasm of intestinal tract, unspecified.
What is the ICD-10 code for encounter for screening for malignant neoplasm of rectum?
- Z12.12 — Encounter for screening for malignant neoplasm of rectum.
What is the ICD-10 code for encounter for screening for malignant neoplasm of small intestine?
- Z12.13 — Encounter for screening for malignant neoplasm of small intestine.
Is Z12.11 billable?
- Yes. Z12.11 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z12.11 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z12.11 a CC or MCC?
- No. Z12.11 is neither a CC nor an MCC under MS-DRG v44.0.