2023

  1. ICD-10-CM Codes
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  2. Z00-Z99
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  3. Z20-Z29
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  5. 2023 ICD-10-CM Diagnosis Code Z20.821

2023 ICD-10-CM Diagnosis Code Z20.821

Contact with and (suspected) exposure to Zika virus

    2019 - New Code 2020 2021 2022 2023 Billable/Specific Code POA Exempt
  • Z20.821 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM Z20.821 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of Z20.821 - other international versions of ICD-10 Z20.821 may differ.
The following code(s) above Z20.821 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 Z20.821:
  • Z00-Z99
    2023 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
  • Z20
    ICD-10-CM Diagnosis Code Z20

    Contact with and (suspected) exposure to communicable diseases

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • carrier of infectious disease (Z22.-)
    • diagnosed current infectious or parasitic disease -see Alphabetic Index
    Type 2 Excludes
    • personal history of infectious and parasitic diseases (Z86.1-)
    Contact with and (suspected) exposure to communicable diseases
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Z20.821 is considered exempt from POA reporting.
ICD-10-CM Z20.821 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 795 Normal newborn
  • 951 Other factors influencing health status
Code History
  • 2019 (effective 10/1/2018): New code
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to Z20.821:
  • Contact (with) - see also Exposure (to)
    • communicable disease Z20.9
      ICD-10-CM Diagnosis Code Z20.9

      Contact with and (suspected) exposure to unspecified communicable disease

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • Zika virus Z20.821
    • Zika virus Z20.821
  • Exposure (to) T75.89
    - see also Contact, with
    ICD-10-CM Diagnosis Code T75.89

    Other specified effects of external causes

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    • communicable disease Z20.9
      ICD-10-CM Diagnosis Code Z20.9

      Contact with and (suspected) exposure to unspecified communicable disease

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • Zika virus Z20.821
    • Zika virus Z20.821

ICD-10-CM Codes Adjacent To Z20.821
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
Z20.8 Contact with and (suspected) exposure to other communicable diseases
Z20.81 Contact with and (suspected) exposure to other bacterial communicable diseases
Z20.810 Contact with and (suspected) exposure to anthrax
Z20.811 Contact with and (suspected) exposure to meningococcus
Z20.818 Contact with and (suspected) exposure to other bacterial communicable diseases
Z20.82 Contact with and (suspected) exposure to other viral communicable diseases
Z20.820 Contact with and (suspected) exposure to varicella
Z20.821 Contact with and (suspected) exposure to Zika virus
Z20.822 Contact with and (suspected) exposure to COVID-19
Z20.828 Contact with and (suspected) exposure to other viral communicable diseases
Z20.89 Contact with and (suspected) exposure to other communicable diseases
Z20.9 Contact with and (suspected) exposure to unspecified communicable disease
Z21 Asymptomatic human immunodeficiency virus [HIV] infection status
Z22 Carrier of infectious disease
Z22.0 Carrier of typhoid
Z22.1 Carrier of other intestinal infectious diseases
Z22.2 Carrier of diphtheria
Z22.3 Carrier of other specified bacterial diseases

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

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