J84.112Idiopathic pulmonary fibrosis

J84.112 is the ICD-10-CM diagnosis code for idiopathic pulmonary fibrosis. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within J84.11 (idiopathic interstitial pneumonia), J84.112 is specifically for idiopathic pulmonary fibrosis. Related codes cover not otherwise specified (J84.111), idiopathic non-specific interstitial pneumonitis (J84.113), acute interstitial pneumonitis (J84.114), respiratory bronchiolitis interstitial lung disease (J84.115), Cryptogenic organizing pneumonia (J84.116) and Desquamative interstitial pneumonia (J84.117).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 196 (Interstitial Lung Disease with MCC, relative weight 1.8336), DRG 197 (Interstitial Lung Disease with CC, relative weight 0.9492) and DRG 198 (Interstitial Lung Disease without CC/MCC, relative weight 0.7259), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

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

Before ICD-10, this condition was coded in ICD-9-CM as 516.31 (idiopathic pulmonary fibrosis).