icd 9 for hypertension

Hypertension, classified under ICD-9 code 401, is a prevalent cardiovascular condition characterized by persistently elevated blood pressure. Despite often lacking noticeable symptoms, unmanaged hypertension over time raises the risk of heart disease, kidney disease, and stroke.

Clinically, hypertension is categorized into various stages, ranging from mild to severe. Mild hypertension, or stage 1 hypertension, is typically defined by a systolic blood pressure between 140 and 159 mmHg and a diastolic blood pressure between 90 and 99 mmHg. Moderate hypertension, or stage 2 hypertension, is indicated by a systolic blood pressure between 160 and 179 mmHg and a diastolic blood pressure between 100 and 109 mmHg. Severe hypertension, or stage 3 hypertension, is characterized by a systolic blood pressure exceeding 180 mmHg and a diastolic blood pressure exceeding 110 mmHg. Notably, the prevalence of hypertension tends to increase with age, and there are observed differences in incidence rates between males and females.

For individuals with hypertension, it is crucial to adhere to a low-salt diet, engage in regular physical activity, and maintain a healthy weight. Moreover, the judicious use of antihypertensive medications under a physician's supervision is a vital strategy for managing blood pressure. It is imperative not to alter the dosage or discontinue medication without medical advice to prevent blood pressure fluctuations and exacerbation of the condition. Should persistent symptoms such as headaches, vision problems, or chest pain occur, immediate medical consultation is advised.