• 460-466 Acute Respiratory Infections
  • 470-478 Other Diseases Of Upper Respiratory Tract
  • 480-488 Pneumonia And Influenza
  • 490-496 Chronic Obstructive Pulmonary Disease And Allied Conditions
  • 500-508 Pneumoconioses And Other Lung Diseases Due To External Agents
  • 510-519 Other Diseases Of Respiratory System