J70: Respiratory conditions due to other external agents

J70.3: Chronic drug-induced interstitial lung disorders

You need lungs to breath. When you breathe in, the air with the oxygen passes through the airways to the lungs. The respiratory tract ends in the air sacs in the lungs. Oxygen passes into the blood in the pulmonary alveoli (air sacs). The pulmonary alveoli and the airways are surrounded by supportive tissue. This supportive tissue consists of connective tissue.

You took a particular drug. This drug has permanently altered or damaged the tissue in your lungs.