diagnosis code for interstitial pulmonary disease
J84.9 is a billable ICD code used to specify a diagnosis of interstitial pulmonary disease, unspecified. A 'billable code' is detailed enough to be used to specify a medical diagnosis. The ICD code J849 is used to code Interstitial lung disease Interstitial lung disease (ILD), also known as diffuse parenchymal lung disease (DPLD), is a group of lung diseases affecting the interstitium (the tissue and space around the air sacs of the lungs).