| J84 | Other interstitial pulmonary diseases | NON-BILLABLE CODE |
| J84.0 | Alveolar and parieto-alveolar conditions | NON-BILLABLE CODE |
| J84.01 | Alveolar proteinosis | BILLABLE CODE |
| J84.02 | Pulmonary alveolar microlithiasis | BILLABLE CODE |
| J84.03 | Idiopathic pulmonary hemosiderosis | BILLABLE CODE |
| J84.09 | Other alveolar and parieto-alveolar conditions | BILLABLE CODE |
| J84.1 | Other interstitial pulmonary diseases with fibrosis | NON-BILLABLE CODE |
| J84.10 | Pulmonary fibrosis, unspecified | BILLABLE CODE |
| J84.11 | Idiopathic interstitial pneumonia | NON-BILLABLE CODE |
| J84.111 | Idiopathic interstitial pneumonia, not otherwise specified | BILLABLE CODE |
| J84.112 | Idiopathic pulmonary fibrosis | BILLABLE CODE |
| J84.113 | Idiopathic non-specific interstitial pneumonitis | BILLABLE CODE |
| J84.114 | Acute interstitial pneumonitis | BILLABLE CODE |
| J84.115 | Respiratory bronchiolitis interstitial lung disease | BILLABLE CODE |
| J84.116 | Cryptogenic organizing pneumonia | BILLABLE CODE |
| J84.117 | Desquamative interstitial pneumonia | BILLABLE CODE |
| J84.17 | Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere | NON-BILLABLE CODE |
| J84.170 | Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere | BILLABLE CODE |
| J84.178 | Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere | BILLABLE CODE |
| J84.8 | Other specified interstitial pulmonary diseases | NON-BILLABLE CODE |
| J84.81 | Lymphangioleiomyomatosis | BILLABLE CODE |
| J84.82 | Adult pulmonary Langerhans cell histiocytosis | BILLABLE CODE |
| J84.83 | Surfactant mutations of the lung | BILLABLE CODE |
| J84.84 | Other interstitial lung diseases of childhood | NON-BILLABLE CODE |
| J84.841 | Neuroendocrine cell hyperplasia of infancy | BILLABLE CODE |
| J84.842 | Pulmonary interstitial glycogenosis | BILLABLE CODE |
| J84.843 | Alveolar capillary dysplasia with vein misalignment | BILLABLE CODE |
| J84.848 | Other interstitial lung diseases of childhood | BILLABLE CODE |
| J84.89 | Other specified interstitial pulmonary diseases | BILLABLE CODE |
| J84.9 | Interstitial pulmonary disease, unspecified | BILLABLE CODE |
