ICD-10-CM Code Z77.12

Contact with and (suspected) exposure to hazards in the physical environment

Version 2020 Non-Billable Code

Not Valid for Submission

Z77.12 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of contact with and (suspected) exposure to hazards in the physical environment. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Z77.12
Short Description:Contact w and expsr to hazards in the physical environment
Long Description:Contact with and (suspected) exposure to hazards in the physical environment

Consider the following ICD-10 codes with a higher level of specificity:

  • Z77.120 - Contact with and (suspected) exposure to mold (toxic)
  • Z77.121 - Contact with and (suspected) exposure to harmful algae and algae toxins
  • Z77.122 - Contact with and (suspected) exposure to noise
  • Z77.123 - Contact with and (suspected) exposure to radon and other naturally occurring radiation
  • Z77.128 - Contact with and (suspected) exposure to other hazards in the physical environment

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
      • Oth contact w and exposures hazardous to health (Z77) (suspected)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Environmental Health

Our environment affects our health. If parts of the environment, like the air, water, or soil become polluted, it can lead to health problems. For example, asthma pollutants and chemicals in the air or in the home can trigger asthma attacks.

Some environmental risks are a part of the natural world, like radon in the soil. Others are the result of human activities, like lead poisoning from paint, or exposure to asbestos or mercury from mining or industrial use.

NIH: National Institute of Environmental Health Sciences


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