ICD-10-CM 2027 diagnosis code
Z77.22Contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic)
Z77.22 is a valid, billable ICD-10-CM code for contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic). It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Cntct w and expsr to environ tobacco smoke (acute) (chronic)
Looking up by condition? See ICD-10 code for Second hand tobacco smoke exposure.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Z77.22
Z77.22 is the ICD-10-CM diagnosis code for contact with and (suspected) exposure to environmental tobacco smoke (acute) (chronic). It belongs to category Z77 (other contact with and (suspected) exposures hazardous to health), block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
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).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as V15.89 (other specified personal history presenting hazards to health).
Coding notes
- Exposure to second hand tobacco smoke (acute) (chronic)
- Passive smoking (acute) (chronic)
- occupational exposure to environmental tobacco smoke (Z57.31)
Notes that apply from higher levels
Instructions written at a parent level also apply to Z77.22.
› From Z77 Other contact with and (suspected) exposures hazardous to health
- contact with and (suspected) exposures to potential hazards 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)
Broader instructions also apply from Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status and Chapter 21: Factors influencing health status and contact with health services.
Alphabetic index entries
6 entriesTerms in the official ICD-10-CM index that lead to Z77.22.
Codes whose notes reference Z77.22
- C07Use additional code
- C08Use additional code
- C09Use additional code
- C10Use additional code
- C11Use additional code
- C12Use additional code
- C13Use additional code
- C14Use additional code
- C32Use additional code
- C33Use additional code
- C34Use additional code
- C39Use additional code
- D00.0Use additional code
- D02Use additional code
- G31.84Use additional code
- H65Use additional code
- H66Use additional code
- I20Use additional code
- I21Use additional code
- I22Use additional code
- I25Use additional code
- I70Use additional code
- J37Use additional code
- J40Use additional code
- J41Use additional code
- J42Use additional code
- J45Use additional code
- J47Use additional code
- J81Use additional code
- J98Use additional code
- K05Use additional code
- K11Use additional code
- K12Use additional code
- K13Use additional code
- K14Use additional code
- P96.81Excludes2
- T65.22Use additional code
- Z57.31Excludes2
- Z85Use additional code
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services
ICD-9-CM equivalent
Converter →- V15.89Other specified personal history presenting hazards to healthapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Z77.22
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.
What DRG does Z77.22 group to?
- Z77.22 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.