Diagnosis Code Z20
Information for Medical Professionals
References found for the code Z20 in the Index of Diseases and Injuries:
- Type 1 Excludes Notes: Type 1 Excludes Notes
A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- carrier of infectious disease (Z22.-)
- diagnosed current infectious or parasitic disease -SEE “See”
The “see” instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the “see” note to locate the correct code. Alphabetic Index
- Type 2 Excludes Notes: "And"
The word “and” should be interpreted to mean either “and” or “or” when it appears in a title.
- personal history of infectious and parasitic diseases (Z86.1-)
Information for Patients
Also called: Communicable diseases
Infectious diseases kill more people worldwide than any other single cause. Infectious diseases are caused by germs. Germs are tiny living things that are found everywhere - in air, soil and water. You can get infected by touching, eating, drinking or breathing something that contains a germ. Germs can also spread through animal and insect bites, kissing and sexual contact. Vaccines, proper hand washing and medicines can help prevent infections.
There are four main kinds of germs:
- Bacteria - one-celled germs that multiply quickly and may release chemicals which can make you sick
- Viruses - capsules that contain genetic material, and use your own cells to multiply
- Fungi - primitive plants, like mushrooms or mildew
- Protozoa - one-celled animals that use other living things for food and a place to live
NIH: National Institute of Allergy and Infectious Diseases