• R00 Abnormalities of heart beat
  • R01 Cardiac murmurs and other cardiac sounds
  • R03 Abnormal blood-pressure reading, without diagnosis
  • R04 Hemorrhage from respiratory passages
  • R05 Cough
  • R06 Abnormalities of breathing
  • R07 Pain in throat and chest
  • R09 Other symptoms and signs involving the circulatory and respiratory system