The ICD-10 code range for Symptoms and signs involving the circulatory and respiratory systems R00-R09 is medical classification list by the World Health Organization (WHO).
ICD-10 Code range (R00-R09), Symptoms and signs involving the circulatory and respiratory systems contains ICD-10 codes for Abnormal blood-pressure reading, without diagnosis, Elevated blood-pressure reading, without diagnosis of hypertension, Nonspecific low blood-pressure reading