ICD-10-CM 2027
ICD-10 code for water pollution contact
Contact with and (suspected) exposure to water pollution
From the official ICD-10-CM alphabetic index entry “Contact (with) › water pollution”. Page updated September 29, 2026.
About coding water pollution contact
The ICD-10-CM code for water pollution contact is Z77.111 (Contact with and (suspected) exposure to water pollution).
Within Z77.11 (contact with and (suspected) exposure to environmental pollution), Z77.111 is specifically for contact with and (suspected) exposure to water pollution. Related codes cover air pollution (Z77.110), 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 water pollution contact ICD-10 codes
What is the ICD-10 code for water pollution contact?
- Z77.111 — Contact with and (suspected) exposure to water pollution.
Is Z77.111 billable?
- Yes. Z77.111 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z77.111 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 Z77.111 a CC or MCC?
- No. Z77.111 is neither a CC nor an MCC under MS-DRG v44.0.