| J449 | Chronic obstructive pulmonary disease, unspecified |
| J45 | Asthma |
| J452 | Mild intermittent asthma |
| J4520 | Mild intermittent asthma, uncomplicated |
| J4521 | Mild intermittent asthma with (acute) exacerbation |
| J4522 | Mild intermittent asthma with status asthmaticus |
| J453 | Mild persistent asthma |
| J4530 | Mild persistent asthma, uncomplicated |
| J4531 | Mild persistent asthma with (acute) exacerbation |
| J4532 | Mild persistent asthma with status asthmaticus |
| J454 | Moderate persistent asthma |
| J4540 | Moderate persistent asthma, uncomplicated |
| J4541 | Moderate persistent asthma with (acute) exacerbation |
| J4542 | Moderate persistent asthma with status asthmaticus |
| J455 | Severe persistent asthma |
| J4550 | Severe persistent asthma, uncomplicated |
| J4551 | Severe persistent asthma with (acute) exacerbation |
| J4552 | Severe persistent asthma with status asthmaticus |
| J459 | Other and unspecified asthma |
| J4590 | Unspecified asthma |
| J45901 | Unspecified asthma with (acute) exacerbation |
| J45902 | Unspecified asthma with status asthmaticus |
| J45909 | Unspecified asthma, uncomplicated |
| J4599 | Other asthma |
| J45990 | Exercise induced bronchospasm |
| J45991 | Cough variant asthma |
| J45998 | Other asthma |
| J47 | Bronchiectasis |
| J470 | Bronchiectasis with acute lower respiratory infection |
| J471 | Bronchiectasis with (acute) exacerbation |
| J479 | Bronchiectasis, uncomplicated |
| J4A | Chronic lung allograft dysfunction |
| J4A0 | Restrictive allograft syndrome |
| J4A8 | Other chronic lung allograft dysfunction |
| J4A9 | Chronic lung allograft dysfunction, unspecified |
| J60 | Coalworker's pneumoconiosis |
| J61 | Pneumoconiosis due to asbestos and other mineral fibers |
| J62 | Pneumoconiosis due to dust containing silica |
| J620 | Pneumoconiosis due to talc dust |
| J628 | Pneumoconiosis due to other dust containing silica |
| J63 | Pneumoconiosis due to other inorganic dusts |
| J630 | Aluminosis (of lung) |
| J631 | Bauxite fibrosis (of lung) |
| J632 | Berylliosis |
| J633 | Graphite fibrosis (of lung) |
| J634 | Siderosis |
| J635 | Stannosis |
| J636 | Pneumoconiosis due to other specified inorganic dusts |
| J64 | Unspecified pneumoconiosis |
| J65 | Pneumoconiosis associated with tuberculosis |