ICD-10-CM 2027
ICD-10 code for gastrointestinal condition screening
Encounter for screening for other digestive system disorders
From the official ICD-10-CM alphabetic index entry “Screening (for) › gastrointestinal condition”. Page updated September 29, 2026.
About coding gastrointestinal condition screening
The ICD-10-CM code for gastrointestinal condition screening is Z13.818 (Encounter for screening for other digestive system disorders).
Within Z13.81, choose Z13.818 (other digestive system disorders) only when documentation doesn't support a more specific option: upper gastrointestinal disorder (Z13.810) and lower gastrointestinal disorder (Z13.811).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about gastrointestinal condition screening ICD-10 codes
What is the ICD-10 code for gastrointestinal condition screening?
- Z13.818 — Encounter for screening for other digestive system disorders.
Is Z13.818 billable?
- Yes. Z13.818 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z13.818 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 Z13.818 a CC or MCC?
- No. Z13.818 is neither a CC nor an MCC under MS-DRG v44.0.