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Z77.22

Z77.22: Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)

Billable / specific codeICD-10-CM

Z77.22 is a billable, specific ICD-10-CM code for contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic). It is valid for submission on a claim.

Check Z77.22 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • nicotine dependence (F17.-)
  • tobacco use (Z72.0)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • occupational exposure to environmental tobacco smoke (Z57.31)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Exposure to second hand tobacco smoke (acute) (chronic)
  • Passive smoking (acute) (chronic)

Excludes2 inherited from the categories above Z77.22

Not part of this code, but both may be coded when both are present.

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

  • 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)

Other codes that can never be billed with Z77.22

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z13.88Encounter for screening for disorder due to exposure to contaminants
  • Z03Encounter for medical observation for suspected diseases and conditions ruled out

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Z77.22 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56448Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography

Alphabetic index entries that lead here

  • Second hand tobacco smoke exposure(acute) (chronic)
  • Exposure›environmental tobacco smoke(acute) (chronic)
  • Exposure›second hand tobacco smoke(acute) (chronic)
  • Passive›smoking
  • Smoking›passive
  • Exposure›smoke›tobacco, second hand

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z77.2

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.