Airway disease due to specific organic dust
In Lung diseases due to external agents (J60-J70), chapter 10: Diseases of the Respiratory System
4 billable codes under J66: none are a CC or MCC; all map to HCC 280 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders).An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers COPD and asthma exacerbations, sequencing of acute respiratory failure, confirmed versus suspected identified influenza, ventilator associated pneumonia, and vaping-related disorders.
- Chronic Obstructive Pulmonary Disease [COPD] and Asthma (page 56)
- Acute Respiratory Failure (page 56)
- Influenza due to certain identified influenza viruses (page 57)
- Ventilator associated Pneumonia (page 57)
- Vaping-related disorders (page 58)
All codes under J66
J66 can't be used on a claim. Pick a billable code below; grey headings group them.
J66 MS-DRGs
As the principal diagnosis, all 4 billable codes under J66 group to MS-DRG 196, 197, or 198 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Interstitial Lung Diseases
Interstitial lung disease is the name for a large group of diseases that inflame or scar the lungs. The inflammation and scarring make it hard to get enough oxygen. The scarring is called pulmonary fibrosis.
Read more about interstitial lung diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.