Z20.0Contact with and (suspected) exposure to intestinal infectious diseases

Z20.0 is the ICD-10-CM diagnosis code for contact with and (suspected) exposure to intestinal infectious diseases. It belongs to category Z20 (contact with and (suspected) exposure to communicable diseases), block Z20-Z29 (persons with potential health hazards related to communicable diseases) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within Z20 (contact with and (suspected) exposure to communicable diseases), Z20.0 is specifically for contact with and (suspected) exposure to intestinal infectious diseases. Related codes cover tuberculosis (Z20.1), infections with a predominantly sexual mode of transmission (Z20.2), rabies (Z20.3), rubella (Z20.4), viral hepatitis (Z20.5), human immunodeficiency virus [HIV] (Z20.6), pediculosis, acariasis and other infestations (Z20.7), other communicable diseases (Z20.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: Z20.01 (due to Escherichia coli (E. coli)) and Z20.09 (diseases).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.