ICD-10-CM 2027
ICD-10 code for humidifier lung or pneumonitis
From the official ICD-10-CM alphabetic index entry “Humidifier lung or pneumonitis”. Page updated September 29, 2026.
About coding humidifier lung or pneumonitis
The ICD-10-CM code for humidifier lung or pneumonitis is J67.7 (Air conditioner and humidifier lung).
Within J67 (hypersensitivity pneumonitis due to organic dust), J67.7 is specifically for air conditioner and humidifier lung. Related codes cover Farmer's lung (J67.0), Bagassosis (J67.1), Bird fancier's lung (J67.2), Suberosis (J67.3), Maltworker's lung (J67.4), Mushroom-worker's lung (J67.5), Maple-bark-stripper's lung (J67.6), hypersensitivity pneumonitis due to other organic dusts (J67.8) and 1 more.
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 196 (Interstitial Lung Disease with MCC, relative weight 1.8336), DRG 197 (Interstitial Lung Disease with CC, relative weight 0.9492) and DRG 198 (Interstitial Lung Disease without CC/MCC, relative weight 0.7259), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about humidifier lung or pneumonitis ICD-10 codes
What is the ICD-10 code for humidifier lung or pneumonitis?
- J67.7 — Air conditioner and humidifier lung.
Is J67.7 billable?
- Yes. J67.7 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J67.7 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J67.7 as a principal diagnosis.
Is J67.7 a CC or MCC?
- J67.7 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.