ICD-10-CM 2027
ICD-10 code for second hand tobacco smoke exposure
Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)
From the official ICD-10-CM alphabetic index entry “Second hand tobacco smoke exposure (acute) (chronic)”. Page updated September 29, 2026.
About coding second hand tobacco smoke exposure
The ICD-10-CM code for second hand tobacco smoke exposure is Z77.22 (Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Z77.22.
Within Z77.2 (contact with and (suspected) exposure to other hazardous substances), Z77.22 is specifically for contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic). Related codes cover potentially hazardous body fluids (Z77.21) and other hazardous substances (Z77.29).
Don't report Z77.22 together with the conditions in its Excludes1 note: nicotine dependence (F17.-) and tobacco use (Z72.0).
The conditions in its Excludes2 note aren't part of Z77.22, but may be coded alongside it if the patient has both: occupational exposure to environmental tobacco smoke (Z57.31).
More specific second hand tobacco smoke exposure codes (official index)
- in the perinatal period P96.81 — Exposure to (parental) (environmental) tobacco smoke in the perinatal period
Don't confuse with (Excludes1 for Z77.22)
Common questions about second hand tobacco smoke exposure ICD-10 codes
What is the ICD-10 code for second hand tobacco smoke exposure?
- Z77.22 — Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic). More specific codes apply when the documentation supports them: P96.81.
Is Z77.22 billable?
- Yes. Z77.22 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z77.22 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 Z77.22 a CC or MCC?
- No. Z77.22 is neither a CC nor an MCC under MS-DRG v44.0.