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Z77.2

⚠ Non-billable (Header)

Contact with and (suspected) exposure to other hazardous substances

Factors influencing health status and contact with health services (Z00-Z99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

Z77
  • • contact with and (suspected) exposure to communicable diseases (Z20.-)
  • • exposure to (parental) (environmental) tobacco smoke in the perinatal period (P96.81)
  • • newborn affected by noxious substances transmitted via placenta or breast milk (P04.-)
  • • occupational exposure to risk factors (Z57.-)
  • • retained foreign body (Z18.-)
  • • retained foreign body fully removed (Z87.821)
  • • toxic effects of substances chiefly nonmedicinal as to source (T51-T65)

Child Codes (3)

Z77.21Contact with and (suspected) exposure to potentially hazardous body fluidsZ77.22Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)Z77.29Contact with and (suspected) exposure to other hazardous substances

Clinical Description

ICD-10-CM code Z77.2 represents contact with and (suspected) exposure to other hazardous substances. This code falls under the Factors influencing health status and contact with health services (Z00-Z99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 5-character code at the 4th level of specificity. There are 3 more specific child codes under Z77.2.

Frequently Asked Questions

What is ICD-10 code Z77.2?

ICD-10-CM code Z77.2 is "Contact with and (suspected) exposure to other hazardous substances". It belongs to the category: Factors influencing health status and contact with health services (Z00-Z99).

Is Z77.2 a billable ICD-10 code?

No, Z77.2 is a non-billable header code. A more specific child code must be used for billing.

Can Z77.2 be coded with other codes?

Z77.2 has 7 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in Z77

Other codes in the same category that may be relevant for differential coding:

Z77.0Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicalsZ77.1Contact with and (suspected) exposure to environmental pollution and hazards in the physical environmentZ77.3Contact with and (suspected) exposure to war theaterZ77.9Other contact with and (suspected) exposures hazardous to health

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Code Information

CodeZ77.2
BillableNo — Header code
ParentZ77
CategoryFactors influencing health status and contact with health services (Z00-Z99)
Excludes10 rule(s)
Excludes27 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)