Other contact with and (suspected) exposures hazardous to health
In Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99), chapter 21: Factors Influencing Health Status and Contact with Health Services
31 billable codes under Z77: none are a CC or MCC; none map to an HCC.
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Instructional notes
Includes: conditions that are coded here
- contact with and (suspected) exposures to potential hazards to health
Excludes2: not included here, code separately if applicable
- 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)
Also applies, from Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
These notes sit on Z77-Z99 and apply to every code under it, including Z77.
Code also: add a code for this too, order depends on the encounter
- any follow-up examination (Z08-Z09)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers when and how to use Z codes (Z00-Z99) for encounters and supplementary information, including contact, status, history, screening, aftercare, exams, and social determinants of health.
All codes under Z77
Z77 can't be used on a claim. Pick a billable code below; grey headings group them.
- Z77.0Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicals
- Z77.01Contact with and (suspected) exposure to hazardous metals
- Z77.010Contact with and (suspected) exposure to arsenic
- Z77.011Contact with and (suspected) exposure to lead
- Z77.012Contact with and (suspected) exposure to uranium
- Z77.013Contact with and (suspected) exposure to gadolinium
- Z77.018Contact with and (suspected) exposure to other hazardous metals
- Z77.02Contact with and (suspected) exposure to hazardous aromatic compounds
- Z77.020Contact with and (suspected) exposure to aromatic amines
- Z77.021Contact with and (suspected) exposure to benzene
- Z77.028Contact with and (suspected) exposure to other hazardous aromatic compounds
- Z77.09Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicals
- Z77.090Contact with and (suspected) exposure to asbestos
- Z77.098Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicals
- Z77.1Contact with and (suspected) exposure to environmental pollution and hazards in the physical environment
- Z77.11Contact with and (suspected) exposure to environmental pollution
- Z77.110Contact with and (suspected) exposure to air pollution
- Z77.111Contact with and (suspected) exposure to water pollution
- Z77.112Contact with and (suspected) exposure to soil pollution
- Z77.118Contact with and (suspected) exposure to other environmental pollution
- Z77.12Contact with and (suspected) exposure to hazards in the physical environment
- Z77.120Contact with and (suspected) exposure to mold (toxic)
- Z77.121Contact with and (suspected) exposure to harmful algae and algae toxins
- Z77.122Contact with and (suspected) exposure to noise
- Z77.123Contact with and (suspected) exposure to radon and other naturally occurring radiation
- Z77.128Contact with and (suspected) exposure to other hazards in the physical environment
- Z77.2Contact with and (suspected) exposure to other hazardous substances
- Z77.21Contact with and (suspected) exposure to potentially hazardous body fluids
- Z77.22Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)
- Z77.29Contact with and (suspected) exposure to other hazardous substances
- Z77.3Contact with and (suspected) exposure to war theater
- Z77.31Contact with and (suspected) exposure to Gulf War theater
- Z77.32Contact with and (suspected) exposure to burn pits in war theater
- Z77.33Contact with and (suspected) exposure to Agent Orange
- Z77.39Contact with and (suspected) exposure to other war theater
- Z77.4Contact with and (suspected) exposure to blast overpressure
- Z77.40Contact with and (suspected) exposure to unspecified blast overpressure
- Z77.41Contact with and (suspected) exposure to low-level blast overpressure
- Z77.42Contact with and (suspected) exposure to high-level blast overpressure
- Z77.49Contact with and (suspected) exposure to other blast overpressure
- Z77.9Other contact with and (suspected) exposures hazardous to health
Z77 MS-DRG
As the principal diagnosis, all 31 billable codes under Z77 group to MS-DRG 951 (v44.0).
Other codes that refer to Z77
Notes on these codes point to Z77.
- P04 Excludes2: newborn in contact with and (suspected) exposures hazardous to health not transmitted via placenta or breast milk (Z77.-)
- T51-T65 Excludes1: contact with and (suspected) exposure to toxic substances (Z77.-)
- Z03 Excludes1: contact with and (suspected) exposures hazardous to health (Z77.-)
- Z13.88 Excludes1: those exposed to contaminants without suspected disorders (Z57.-, Z77.-)
- Z91 Excludes2: contact with and (suspected) exposures hazardous to health (Z77.-)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Poisoning
A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:
Read more about poisoning on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.