BETA v.3.0

2025 ICD-10-CM code Z20.0

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

Use this code when the patient has had contact with and suspected exposure to intestinal infectious diseases, but does not have a confirmed diagnosis.Do not use this code if the patient has a confirmed diagnosis of an infectious disease. In that case, the specific disease code should be used.

Medical necessity is established by the concern for potential infection due to contact with a confirmed or suspected case or a contaminated source.

The physician is responsible for documenting the suspected exposure and any related symptoms or treatment provided.

In simple words: This code is used when someone has been in contact with or possibly exposed to an intestinal infection, like a stomach bug.

This code is used to document a patient's contact with and suspected exposure to intestinal infectious diseases. It is important to note that this code represents a reason for encounter and should be accompanied by a procedure code if a procedure is performed.

Example 1: A patient presents to their physician after attending a picnic where several attendees later developed symptoms of food poisoning. The patient is currently asymptomatic but is concerned about potential exposure to an intestinal infection., A child is brought to the emergency room after coming into close contact with a classmate diagnosed with shigellosis. The child is exhibiting early signs of gastrointestinal illness., A public health official uses this code to track potential exposures to a contaminated water supply during an outbreak investigation.

Documentation should include details of the suspected exposure, such as the date, time, location, and source of the potential infection.Any symptoms experienced by the patient should also be noted.

** This code is intended for use in situations where a person may or may not be sick but has encountered health services due to potential exposure.It is also used when a circumstance or problem influences a person's health status but is not a current illness or injury.Excludes1: carrier of infectious disease (Z22.-) diagnosed current infectious or parasitic disease - see Alphabetic Index. Excludes2: personal history of infectious and parasitic diseases (Z86.1-).

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