J84 Other interstitial pulmonary diseases

Category / Non-billable header 30 subcodes

Block: Other respiratory diseases principally affecting the interstitium (J80-J84)

Excludes 1 (cannot be coded together)

  • drug-induced interstitial lung disorders (J70.2-J70.4)
  • interstitial emphysema (J98.2)

Excludes 2 (not included here)

  • lung diseases due to external agents (J60-J70)

Code Also

  • , if applicable, associated condition

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
J84..0 Alveolar and parieto-alveolar conditions No
J84..01 Alveolar proteinosis Yes
J84..02 Pulmonary alveolar microlithiasis Yes
J84..03 Idiopathic pulmonary hemosiderosis Yes
J84..09 Other alveolar and parieto-alveolar conditions Yes
J84..1 Other interstitial pulmonary diseases with fibrosis No
J84..10 Pulmonary fibrosis, unspecified Yes
J84..11 Idiopathic interstitial pneumonia No
J84..111 Idiopathic interstitial pneumonia, not otherwise specified Yes
J84..112 Idiopathic pulmonary fibrosis Yes
J84..113 Idiopathic non-specific interstitial pneumonitis Yes
J84..114 Acute interstitial pneumonitis Yes
J84..115 Respiratory bronchiolitis interstitial lung disease Yes
J84..116 Cryptogenic organizing pneumonia Yes
J84..117 Desquamative interstitial pneumonia Yes
J84..17 Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere No
J84..170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere Yes
J84..178 Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere Yes
J84..2 Lymphoid interstitial pneumonia Yes
J84..8 Other specified interstitial pulmonary diseases No
J84..81 Lymphangioleiomyomatosis Yes
J84..82 Adult pulmonary Langerhans cell histiocytosis Yes
J84..83 Surfactant mutations of the lung Yes
J84..84 Other interstitial lung diseases of childhood No
J84..841 Neuroendocrine cell hyperplasia of infancy Yes
J84..842 Pulmonary interstitial glycogenosis Yes
J84..843 Alveolar capillary dysplasia with vein misalignment Yes
J84..848 Other interstitial lung diseases of childhood Yes
J84..89 Other specified interstitial pulmonary diseases Yes
J84..9 Interstitial pulmonary disease, unspecified Yes

Last reviewed: September 2026