J84.8Other specified interstitial pulmonary diseases

J84.8 is the ICD-10-CM diagnosis code for other specified interstitial pulmonary diseases. It belongs to category J84 (other interstitial pulmonary diseases), block J80-J84 (other respiratory diseases principally affecting the interstitium) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within J84, choose J84.8 (Other specified interstitial pulmonary diseases) only when documentation doesn't support a more specific option: alveolar and parieto-alveolar conditions (J84.0), with fibrosis (J84.1), lymphoid interstitial pneumonia (J84.2) and interstitial pulmonary disease, unspecified (J84.9).

To report this condition, pick the subcode that matches the documentation: J84.81 (Lymphangioleiomyomatosis), J84.82 (histiocytosis), J84.83 (lung), J84.84 (childhood) and J84.89 (diseases).

Don't report J84.8 together with the conditions in its Excludes1 note: exogenous lipoid pneumonia (J69.1) and unspecified lipoid pneumonia (J69.1).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.