Interstitial pulmonary disease, unspecified

This code represents a broad category of chronic lung diseases characterized by inflammation and scarring (fibrosis) of the interstitium, the tissue and space around the air sacs of the lungs. These conditions impair gas exchange and can lead to progressive respiratory failure. The "unspecified" nature indicates that the specific type of interstitial pulmonary disease has not been definitively diagnosed.

Use this code when documentation clearly indicates interstitial pulmonary disease but lacks further specificity regarding the etiology or type (e.g., "interstitial lung disease," "ILD"). This code is appropriate when a more precise diagnosis, such as idiopathic pulmonary fibrosis or sarcoidosis, has not yet been established or ruled out.

• Avoid using this code if a more specific diagnosis of interstitial lung disease is documented (e.g., J84.10 for idiopathic pulmonary fibrosis).
• Query the provider for further specificity if possible, as a more precise diagnosis often impacts treatment and prognosis.
• This code should be sequenced as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.