ICD-10 Diagnosis Code Z20.9

Contact w and exposure to unsp communicable disease

Diagnosis Code Z20.9

ICD-10: Z20.9
Short Description: Contact w and exposure to unsp communicable disease
Long Description: Contact with and (suspected) exposure to unspecified communicable disease
This is the 2017 version of the ICD-10-CM diagnosis code Z20.9

Code Classification
  • Factors influencing health status and contact with health services
    • Persons with potential health hazards related to communicable diseases (Z20-Z29)
      • Contact w and (suspected) exposure to communicable diseases (Z20)

Information for Patients

Infectious Diseases

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

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