ICD-10-CM 2027
ICD-10 code for aromatic amines contact
Contact with and (suspected) exposure to aromatic amines
From the official ICD-10-CM alphabetic index entry “Contact (with) › aromatic amines”. Page updated September 29, 2026.
About coding aromatic amines contact
The ICD-10-CM code for aromatic amines contact is Z77.020 (Contact with and (suspected) exposure to aromatic amines).
Within Z77.02 (contact with and (suspected) exposure to hazardous aromatic compounds), Z77.020 is specifically for contact with and (suspected) exposure to aromatic amines. Related codes cover benzene (Z77.021) and other hazardous aromatic compounds (Z77.028).
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 aromatic amines contact ICD-10 codes
What is the ICD-10 code for aromatic amines contact?
- Z77.020 — Contact with and (suspected) exposure to aromatic amines.
Is Z77.020 billable?
- Yes. Z77.020 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z77.020 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 Z77.020 a CC or MCC?
- No. Z77.020 is neither a CC nor an MCC under MS-DRG v44.0.