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Z77.110

Billable

Contact with and (suspected) exposure to air pollution

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A person has been exposed to or is suspected of being exposed to air pollution, such as smog, vehicle emissions, or industrial air contaminants.

Coding Tips

  • Use this code when documenting environmental exposure history during patient assessment or when air quality concerns are relevant to the clinical encounter.
  • This is a contact/exposure code (Z77 category) and should be used as a secondary diagnosis to document environmental risk factors, not as a primary diagnosis.

Code Hierarchy

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