NCIthesaurus ventilation pneumonitis An extrinsic allergic alveolitis caused by inhalation of antigens from thermophilic actinomycetes species growing in air conditioners and humidifiers. Fungi like Aureobasidium sp and Candida albicans that survive in the contaminated water in humidifiers and air conditioners are also known to cause the disease. NCI:C196790 UMLS_CUI:C0155891 ICD9CM:495.7 Air-conditioner and humidifier lung DOID:11289 Humidifier lung ICD10CM:J67.7 disease_ontology SNOMEDCT_US_2025_09_01:48347002 extrinsic allergic alveolitis