ICD-10-CM Tabular Index · Chapter 21 · FY 2027 Z77

Other contact with and (suspected) exposures hazardous to health (Z77) ICD-10-CM

The Z77 code range covers other contact with and (suspected) exposures hazardous to health with 42 ICD-10-CM diagnosis codes. 31 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
42
Diagnosis Codes
31
Billable Codes
Z77
Code Range
Z77–Z99
Parent Section

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

ICD-10-CM

Codes in the Z77 Range 42 codes · 31 billable

42 of 42 shown
  • Z77 Other contact with and (suspected) exposures hazardous to healthNon-billable
  • Z77.0 Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicalsNon-billable
  • Z77.01 Contact with and (suspected) exposure to hazardous metalsNon-billable
  • Z77.010 Contact with and (suspected) exposure to arsenic
  • Z77.011 Contact with and (suspected) exposure to lead
  • Z77.012 Contact with and (suspected) exposure to uranium
  • Z77.013 Contact with and (suspected) exposure to gadolinium New
  • Z77.018 Contact with and (suspected) exposure to other hazardous metals
  • Z77.02 Contact with and (suspected) exposure to hazardous aromatic compoundsNon-billable
  • Z77.020 Contact with and (suspected) exposure to aromatic amines
  • Z77.021 Contact with and (suspected) exposure to benzene
  • Z77.028 Contact with and (suspected) exposure to other hazardous aromatic compounds
  • Z77.09 Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicalsNon-billable
  • Z77.090 Contact with and (suspected) exposure to asbestos
  • Z77.098 Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicals
  • Z77.1 Contact with and (suspected) exposure to environmental pollution and hazards in the physical environmentNon-billable
  • Z77.11 Contact with and (suspected) exposure to environmental pollutionNon-billable
  • Z77.110 Contact with and (suspected) exposure to air pollution
  • Z77.111 Contact with and (suspected) exposure to water pollution
  • Z77.112 Contact with and (suspected) exposure to soil pollution
  • Z77.118 Contact with and (suspected) exposure to other environmental pollution
  • Z77.12 Contact with and (suspected) exposure to hazards in the physical environmentNon-billable
  • 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
  • Z77.2 Contact with and (suspected) exposure to other hazardous substancesNon-billable
  • Z77.21 Contact with and (suspected) exposure to potentially hazardous body fluids
  • Z77.22 Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)
  • Z77.29 Contact with and (suspected) exposure to other hazardous substances
  • Z77.3 Contact with and (suspected) exposure to war theaterNon-billable
  • Z77.31 Contact with and (suspected) exposure to Gulf War theater
  • Z77.32 Contact with and (suspected) exposure to burn pits in war theater New
  • Z77.33 Contact with and (suspected) exposure to Agent Orange New
  • Z77.39 Contact with and (suspected) exposure to other war theater
  • Z77.4 Contact with and (suspected) exposure to blast overpressureNon-billable
  • Z77.40 Contact with and (suspected) exposure to unspecified blast overpressure New
  • Z77.41 Contact with and (suspected) exposure to low-level blast overpressure New
  • Z77.42 Contact with and (suspected) exposure to high-level blast overpressure New
  • Z77.49 Contact with and (suspected) exposure to other blast overpressure New
  • Z77.9 Other contact with and (suspected) exposures hazardous to health

About the Z77 Code Range

These codes describe contact with, or suspected exposure to, hazards such as chemicals, pollution, substances, war theaters and blast overpressure.

Z77.0 groups hazardous chemicals, with more specific codes for metals, benzene, asbestos and others. Z77.1 separates pollution of air, water and soil from physical hazards such as mold, noise and radiation. Z77.2 includes potentially hazardous body fluids and environmental tobacco smoke.

Z77.3 separates war theater exposures, including burn pits and Agent Orange. Z77.4 distinguishes low-level, high-level, unspecified and other blast overpressure. Z77.9 describes other contact with or suspected exposure to health hazards.

FY 2027 changes: The FY 2027 ICD-10-CM update, effective October 1, 2026, added Z77.013, Z77.32, Z77.33, Z77.40, Z77.41, Z77.42 and Z77.49.

Questions About This Page

How many billable codes are in the Z77 range?

Of the 42 codes in this range, 31 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the Z77 range classify?

The range classifies other contact with and (suspected) exposures hazardous to health. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 21ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.