Oxygen Therapy Use in Patients With Fibrotic Interstitial Lung Disease

Inclusion Criteria

• •≥2 fibrosing Interstitial Lung Disease (ILD) diagnoses in any position on different dates of service, within 365 days of each other, and in the same continuous enrollment period during the patient identification period. The fibrosing ILD diagnosis date will be defined as the date of the first fibrosing ILD diagnosis. The two fibrosing ILD diagnosis codes can be one of the following combinations:
• •2 fibrosis codes
• •1 fibrosis code \& 1 ILD code that requires fibrosis code
• •≥18 years of age as of the fibrosing ILD diagnosis date
• •Continuous enrollment with medical and pharmacy coverage for 12 months prior to the fibrosing ILD diagnosis date (pre-ILD baseline period)