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Z77 ICD-10-CM Code: Other contact with and (suspected) exposures hazardous to health

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

Z77

Other contact with and (suspected) exposures hazardous to health

ICD-10-CM diagnosis code · United States clinical modification

Where Z77 sits

  1. 1

    Chapter 21

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

  2. 2

    Section

    Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

  3. 3

    Category Z77

    Other contact with and (suspected) exposures hazardous to health

  4. 4

    Code Z77

    Other contact with and (suspected) exposures hazardous to health

Codes under Z77

Z77 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Z77.0Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicalsZ77.1Contact with and (suspected) exposure to environmental pollution and hazards in the physical environmentZ77.2Contact with and (suspected) exposure to other hazardous substancesZ77.3Contact with and (suspected) exposure to war theaterZ77.4Contact with and (suspected) exposure to blast overpressureZ77.9Other contact with and (suspected) exposures hazardous to health

Notes for this code

Inclusion terms

No inclusion terms are listed for Z77.

Code first

No “code first” instruction is listed for Z77.

Use additional code

No “use additional code” instruction is listed for Z77.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for Z77.

Excludes2

Conditions not included here that may be reported separately when present.

  • 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)

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code Z77 mean?

Z77 is the FY 2027 U.S. ICD-10-CM code for “Other contact with and (suspected) exposures hazardous to health.”

Is Z77 a billable or specific ICD-10-CM code?

No. Z77 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is Z77 located in ICD-10-CM?

Z77 is listed in Chapter 21, Factors influencing health status and contact with health services (Z00-Z99), within Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) (Z77–Z99), under category Z77, Other contact with and (suspected) exposures hazardous to health.

What coding notes are listed for Z77?

No inclusion terms are listed for Z77 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: 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).