ICD-10-CM 2027
ICD-10 code for passive smoking
Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)
From the official ICD-10-CM alphabetic index entry “Smoking › passive”. Page updated September 29, 2026.
About coding passive smoking
The ICD-10-CM code for passive smoking is Z77.22 (Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)).
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).
Don't confuse with (Excludes1 for Z77.22)
Common questions about passive smoking ICD-10 codes
What is the ICD-10 code for passive smoking?
- Z77.22 — Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic).
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.