J67.7 Air conditioner and humidifier lung

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Allergic alveolitis due to fungal, thermophilic actinomycetes and other organisms growing in ventilation [air conditioning] systems

Applies from J67 Hypersensitivity pneumonitis due to organic dust

Includes

• allergic alveolitis and pneumonitis due to inhaled organic dust and particles of fungal, actinomycetic or other origin

Excludes1 (never code together)

• pneumonitis due to inhalation of chemicals, gases, fumes or vapors (J68.0)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 280 — Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders
• CMS-HCC V22: HCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders
• ESRD V24: HCC 112

MS-DRG index

Defines the logic of DRG(s) 196-198 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 495.7 "Ventilation" pneumonitis

Code annotations containing back-references to J67.7

Back-references to J67

• Type 2 Excludes: J18 Pneumonia, unspecified organism ("pneumonitis due to external agents (J67-J70)")
• Type 2 Excludes: J44.1 Chronic obstructive pulmonary disease with (acute) exacerbation ("lung diseases due to external agents (J60-J70)")
• Type 2 Excludes: J44.9 Chronic obstructive pulmonary disease, unspecified ("lung diseases due to external agents (J60-J70)")
• Type 2 Excludes: J45.909 Unspecified asthma, uncomplicated ("lung diseases due to external agents (J60-J70)")
• Type 2 Excludes: J66 Airway disease due to specific organic dust ("allergic alveolitis (J67.-)")
• Type 2 Excludes: J66 Airway disease due to specific organic dust ("hypersensitivity pneumonitis due to organic dust (J67.-)")
• Type 1 Excludes: J81 Pulmonary edema ("pulmonary edema due to external agents (J60-J70)")
• Type 2 Excludes: J84 Other interstitial pulmonary diseases ("lung diseases due to external agents (J60-J70)")
• Code First: J84.170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere ("lung diseases due to external agents (J60-J70)")

Diagnosis Index entries for J67.7

• Air › conditioner lung or pneumonitis
• Allergy, allergic (reaction) (to) › alveolitis (extrinsic) › due to › organisms (fungal, thermophilic actinomycete) growing in ventilation (air conditioning) systems
• Humidifier lung or pneumonitis
• Pneumonitis (acute) (primary) › air-conditioner
• Pneumonitis (acute) (primary) › hypersensitivity › air conditioner lung
• Pneumonitis (acute) (primary) › ventilation (air-conditioning)

Nearby codes

• J67.2 Bird fancier's lung
• J67.3 Suberosis
• J67.4 Maltworker's lung
• J67.5 Mushroom-worker's lung
• J67.6 Maple-bark-stripper's lung
• J67.7 Air conditioner and humidifier lung (this code)
• J67.8 Hypersensitivity pneumonitis due to other organic dusts
• J67.9 Hypersensitivity pneumonitis due to unspecified organic dust