ICD-10-CM 2027
ICD-10 code for Polycyclic aromatic hydrocarbons exposure
Contact with and (suspected) exposure to other hazardous aromatic compounds
From the official ICD-10-CM alphabetic index entry “Exposure (to) › polycyclic aromatic hydrocarbons”. Page updated September 29, 2026.
About coding Polycyclic aromatic hydrocarbons exposure
The ICD-10-CM code for Polycyclic aromatic hydrocarbons exposure is Z77.028 (Contact with and (suspected) exposure to other hazardous aromatic compounds).
Within Z77.02, choose Z77.028 (other hazardous aromatic compounds) only when documentation doesn't support a more specific option: aromatic amines (Z77.020) and benzene (Z77.021).
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 Polycyclic aromatic hydrocarbons exposure ICD-10 codes
What is the ICD-10 code for Polycyclic aromatic hydrocarbons exposure?
- Z77.028 — Contact with and (suspected) exposure to other hazardous aromatic compounds.
Is Z77.028 billable?
- Yes. Z77.028 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z77.028 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 Z77.028 a CC or MCC?
- No. Z77.028 is neither a CC nor an MCC under MS-DRG v44.0.