Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
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
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