ICD-10-CM 2027
ICD-10 code for air pollution contact
Contact with and (suspected) exposure to air pollution
From the official ICD-10-CM alphabetic index entry “Contact (with) › air pollution”. Page updated September 29, 2026.
About coding air pollution contact
The ICD-10-CM code for air pollution contact is Z77.110 (Contact with and (suspected) exposure to air pollution).
Within Z77.11 (contact with and (suspected) exposure to environmental pollution), Z77.110 is specifically for contact with and (suspected) exposure to air pollution. Related codes cover water pollution (Z77.111), soil pollution (Z77.112) and other environmental pollution (Z77.118).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about air pollution contact ICD-10 codes
What is the ICD-10 code for air pollution contact?
- Z77.110 — Contact with and (suspected) exposure to air pollution.
Is Z77.110 billable?
- Yes. Z77.110 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z77.110 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z77.110 a CC or MCC?
- No. Z77.110 is neither a CC nor an MCC under MS-DRG v44.0.