Z77.020 Contact with and (suspected) exposure to aromatic amines

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Contact with and (suspected) exposure to aromatic amines is Z77.020 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Category Z77
34 codes (24 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z77.020:

  • Exposure (to) › aromatic amines
  • Contact (with) › aromatic amines

U.S. Hospital Utilization

Z77.020 appeared in too few sampled U.S. inpatient stays in 2023 to report a national estimate (AHRQ suppresses counts of 10 or fewer) — a rare inpatient diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.20.a.1
Additional codes with observation code (fragment)

observation code, but only if they are unrelated to the suspected condition being observed.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.21.c.6

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

Z77 Other contact with and (suspected) exposures hazardous to health

Related Codes in Z77

Z77 Other contact with and (suspected) exposures hazardous to health Z77.0 Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicals Z77.01 Contact with and (suspected) exposure to hazardous metals Z77.010 Contact with and (suspected) exposure to arsenic Z77.011 Contact with and (suspected) exposure to lead Z77.012 Contact with and (suspected) exposure to uranium Z77.018 Contact with and (suspected) exposure to other hazardous metals Z77.02 Contact with and (suspected) exposure to hazardous aromatic compounds Z77.021 Contact with and (suspected) exposure to benzene Z77.028 Contact with and (suspected) exposure to other hazardous aromatic compounds Z77.09 Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicals Z77.090 Contact with and (suspected) exposure to asbestos Z77.098 Contact with and (suspected) exposure to other hazardous, chiefly nonmedicinal, chemicals Z77.1 Contact with and (suspected) exposure to environmental pollution and hazards in the physical environment Z77.11 Contact with and (suspected) exposure to environmental pollution Z77.110 Contact with and (suspected) exposure to air pollution Z77.111 Contact with and (suspected) exposure to water pollution Z77.112 Contact with and (suspected) exposure to soil pollution Z77.118 Contact with and (suspected) exposure to other environmental pollution Z77.12 Contact with and (suspected) exposure to hazards in the physical environment
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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