Z13.81 - Encounter for screening for digestive system disorders Z13.8 - Encounter for screening for other specified diseases and disorders Z13.81 - Encounter for screening for digestive system disorders
Z13.810 - Encounter for screening for upper gastrointestinal disorder Z13.811 - Encounter for screening for lower gastrointestinal disorder Z13.818 - Encounter for screening for other digestive system disorders