The purpose of this study is to determine how interstitial lung disease can be predicted over time in early rheumatoid arthritis. The investigators will study blood and phlegm samples from participants, along with quality of life questionnaires to determine if and how the presence of ILD may impact the participants quality of life over time.

Participation involves 5 study visits over an 18 month timeframe. During each of these visits, a recent medical history and physical exam will take place, blood and phlegm will be collected, quality of life questionnaires will be administered, and a CT-scan of the chest and pulmonary function testing may be performed.

Inclusion Criteria:

1. Age 18 - 90 years
2. Diagnosis of "early RA" with or without ILD as defined by ACR/EULAR 2010 criteria and confirmed by a member of the ILD or Rheumatology programs at National Jewish Health (NJH)
3. Able to read, speak, and understand English
4. Able and willing to perform all study related tasks, including returning to NJH every 6 months for an 18 month period of time

Exclusion Criteria:

1. Subjects who do not meet all inclusion criteria
2. Pregnant women

Subjects are selected for participation in the study because they have an active diagnosis of rheumatoid arthritis and are at risk fro the development of lung disease.