Carrier of other intestinal infectious diseases

This code identifies an individual who harbors a pathogenic microorganism responsible for an intestinal infectious disease but exhibits no active symptoms of the illness. The person can transmit the infection to others, acting as a reservoir for the disease.

Assign this code when documentation indicates a patient is an asymptomatic carrier of an intestinal pathogen, such as Salmonella typhi (typhoid fever carrier) or certain types of Shigella, confirmed by laboratory testing. It is also appropriate for individuals identified through public health surveillance as carriers of other specified intestinal infectious agents.

• Always seek definitive laboratory confirmation of carrier status.
• Do not use this code if the patient has active symptoms of the intestinal infection; instead, code the specific active infection.
• Consider adding a Z11.- code (Encounter for screening for infectious and parasitic diseases) if the carrier status was identified through screening.