2020 ICD-10-CM Diagnosis Code Z20

Contact with and (suspected) exposure to communicable diseases

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Z20 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Contact w and (suspected) exposure to communicable diseases
  • The 2020 edition of ICD-10-CM Z20 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Z20 - other international versions of ICD-10 Z20 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Z20. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • carrier of infectious disease (
    ICD-10-CM Diagnosis Code Z22
    • Z22 Carrier of infectious disease
      • Z22.0 Carrier of typhoid
      • Z22.1 Carrier of other intestinal infectious diseas...
      • Z22.2 Carrier of diphtheria
      • Z22.3 Carrier of other specified bacterial diseases...
        • Z22.31 Carrier of bacterial disease due to meningoco...
        • Z22.32 Carrier of bacterial disease due to staphyloc...
          • Z22.321 Carrier or suspected carrier of Methicillin s...
          • Z22.322 Carrier or suspected carrier of Methicillin r...
        • Z22.33 Carrier of bacterial disease due to streptoco...
          • Z22.330 Carrier of Group B streptococcus
          • Z22.338 Carrier of other streptococcus
        • Z22.39 Carrier of other specified bacterial diseases...
      • Z22.4 Carrier of infections with a predominantly se...
      • Z22.6 Carrier of human T-lymphotropic virus type-1 ...
      • Z22.7 Latent tuberculosis
      • Z22.8 Carrier of other infectious diseases
      • Z22.9 Carrier of infectious disease, unspecified
    Z22.-
    )
  • diagnosed current infectious or parasitic disease -see Alphabetic Index
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (Z20) and the excluded code together.
  • personal history of infectious and parasitic diseases (
    ICD-10-CM Diagnosis Code Z86.1

    Personal history of infectious and parasitic diseases

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    Type 1 Excludes
    • personal history of infectious diseases specific to a body system
    • sequelae of infectious and parasitic diseases (B90-B94)
    Z86.1-
    )
The following code(s) above Z20 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z20:
  • Z00-Z99
    2020 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    Note
    • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
    Factors influencing health status and contact with health services
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to Z20:
  • Type 2 Excludes: Z77
    , Z83
    ICD-10-CM Diagnosis Code Z77

    Other contact with and (suspected) exposures hazardous to health

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • contact with and (suspected) exposures to potential hazards to health
    Type 2 Excludes
    • contact with and (suspected) exposure to communicable diseases (Z20.-)
    • exposure to (parental) (environmental) tobacco smoke in the perinatal period (P96.81)
    • newborn affected by noxious substances transmitted via placenta or breast milk (P04.-)
    • occupational exposure to risk factors (Z57.-)
    • retained foreign body (Z18.-)
    • retained foreign body fully removed (Z87.821)
    • toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
    ICD-10-CM Diagnosis Code Z83

    Family history of other specific disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • contact with and (suspected) exposure to communicable disease in the family (Z20.-)
ICD-10-CM Codes Adjacent To Z20
Z18.33 Retained wood fragments
Z18.39 Other retained organic fragments
Z18.8 Other specified retained foreign body
Z18.81 Retained glass fragments
Z18.83 Retained stone or crystalline fragments
Z18.89 …… fragments
Z18.9 Retained foreign body fragments, unspecified material
Z19 Hormone sensitivity malignancy status
Z19.1 Hormone sensitive malignancy status
Z19.2 Hormone resistant malignancy status
Z20 Contact with and (suspected) exposure to communicable diseases
Z20.0 Contact with and (suspected) exposure to intestinal infectious diseases
Z20.01 …… due to Escherichia coli (E. coli)
Z20.09 Contact with and (suspected) exposure to other intestinal infectious diseases
Z20.1 Contact with and (suspected) exposure to tuberculosis
Z20.2 Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
Z20.3 Contact with and (suspected) exposure to rabies
Z20.4 Contact with and (suspected) exposure to rubella
Z20.5 Contact with and (suspected) exposure to viral hepatitis
Z20.6 Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
Z20.7 Contact with and (suspected) exposure to pediculosis, acariasis and other infestations

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.