| 6502 | Septum, nasal, deviation of6502 | 1 |
| 6504 | Nose, loss of part of, or scars6504 | 2 |
| 6510 | Sinusitis, pansinusitis, chronic.6510 | formula |
| 6511 | Sinusitis, ethmoid, chronic.6511 | formula |
| 6512 | Sinusitis, frontal, chronic.6512 | formula |
| 6513 | Sinusitis, maxillary, chronic.6513 | formula |
| 6514 | Sinusitis, sphenoid, chronic.6514 | 4 |
| 6515 | Laryngitis, tuberculous, active or inactive.6515 | formula |
| 6516 | Laryngitis, chronic6516 | 2 |
| 6518 | Laryngectomy, total.6518 | 1 |
| 6519 | Aphonia, complete organic6519 | 1 |
| 6520 | Larynx, stenosis of, including residuals of laryngeal trauma (unilateral or bilateral)6520 | 4 |
| 6521 | Pharynx, injuries to6521 | 1 |
| 6522 | Allergic or vasomotor rhinitis6522 | 1 |
| 6523 | Bacterial rhinitis6523 | 1 |
| 6524 | Granulomatous rhinitis6524 | 2 |
| 6600 | Bronchitis, chronic6600 | 4 |
| 6601 | Bronchiectasis6601 | 4 |
| 6602 | Asthma, bronchial6602 | 4 |
| 6603 | Emphysema, pulmonary6603 | 4 |
| 6604 | Chronic obstructive pulmonary disease6604 | 4 |
| 6701 | Tuberculosis, pulmonary, chronic, far advanced, active6701 | 1 |
| 6702 | Tuberculosis, pulmonary, chronic, moderately advanced, active6702 | 1 |
| 6703 | Tuberculosis, pulmonary, chronic, minimal, active6703 | 1 |
| 6704 | Tuberculosis, pulmonary, chronic, active, advancement unspecified6704 | 1 |
| 6721 | Tuberculosis, pulmonary, chronic, far advanced, inactive6721 | formula |
| 6722 | Tuberculosis, pulmonary, chronic, moderately advanced, inactive6722 | formula |
| 6723 | Tuberculosis, pulmonary, chronic, minimal, inactive6723 | formula |
| 6724 | Tuberculosis, pulmonary, chronic, inactive, advancement unspecified6724 | 4 |
| 6730 | Tuberculosis, pulmonary, chronic, active6730 | 1 |
| 6731 | Tuberculosis, pulmonary, chronic, inactive6731 | formula |
| 6732 | Pleurisy, tuberculous, active or inactive6732 | formula |
| 6817 | Pulmonary Vascular Disease6817 | 4 |
| 6819 | Neoplasms, malignant, any specified part of respiratory system exclusive of skin growths6819 | 1 |
| 6820 | Neoplasms, benign, any specified part of respiratory system. Evaluate using an appropriate respiratory analogy.6820 | formula |
| 6822 | Actinomycosis.6822 | formula |
| 6823 | Nocardiosis.6823 | formula |
| 6824 | Chronic lung abscess.6824 | 1 |
| 6825 | Diffuse interstitial fibrosis (interstitial pneumonitis, fibrosing alveolitis).6825 | formula |
| 6826 | Desquamative interstitial pneumonitis.6826 | formula |
| 6827 | Pulmonary alveolar proteinosis.6827 | formula |
| 6828 | Eosinophilic granuloma of lung.6828 | formula |
| 6829 | Drug-induced pulmonary pneumonitis and fibrosis.6829 | formula |
| 6830 | Radiation-induced pulmonary pneumonitis and fibrosis.6830 | formula |
| 6831 | Hypersensitivity pneumonitis (extrinsic allergic alveolitis).6831 | formula |
| 6832 | Pneumoconiosis (silicosis, anthracosis, etc.).6832 | formula |
| 6833 | Asbestosis.6833 | 4 |
| 6834 | Histoplasmosis of lung.6834 | formula |
| 6835 | Coccidioidomycosis.6835 | formula |
| 6836 | Blastomycosis.6836 | formula |
| 6837 | Cryptococcosis.6837 | formula |
| 6838 | Aspergillosis.6838 | formula |
| 6839 | Mucormycosis.6839 | 4 |
| 6840 | Diaphragm paralysis or paresis.6840 | formula |
| 6841 | Spinal cord injury with respiratory insufficiency.6841 | formula |
| 6842 | Kyphoscoliosis, pectus excavatum, pectus carinatum.6842 | formula |
| 6843 | Traumatic chest wall defect, pneumothorax, hernia, etc.6843 | formula |
| 6844 | Post-surgical residual (lobectomy, pneumonectomy, etc.).6844 | formula |
| 6845 | Chronic pleural effusion or fibrosis.6845 | 4 |
| 6846 | Sarcoidosis6846 | 4 |
| 6847 | Sleep Apnea Syndromes (Obstructive, Central, Mixed)6847 | 4 |