| MDC 4 Diseases & Disorders of the Respiratory System |
| Respiratory Signs and Symptoms |
| G4732 | High altitude periodic breathing |
| J80 | Acute respiratory distress syndrome |
| R042 | Hemoptysis |
| R0481 | Acute idiopathic pulmonary hemorrhage in infants |
| R0489 | Hemorrhage from other sites in respiratory passages |
| R049 | Hemorrhage from respiratory passages, unspecified |
| R05 | Cough |
| R0600 | Dyspnea, unspecified |
| R0601 | Orthopnea |
| R0602 | Shortness of breath |
| R0609 | Other forms of dyspnea |
| R061 | Stridor |
| R062 | Wheezing |
| R063 | Periodic breathing |
| R064 | Hyperventilation |
| R066 | Hiccough |
| R0681 | Apnea, not elsewhere classified |
| R0682 | Tachypnea, not elsewhere classified |
| R0683 | Snoring |
| R0689 | Other abnormalities of breathing |
| R069 | Unspecified abnormalities of breathing |
| R071 | Chest pain on breathing |
| R0781 | Pleurodynia |
| R093 | Abnormal sputum |
| R222 | Localized swelling, mass and lump, trunk |
| R918 | Other nonspecific abnormal finding of lung field |