Chronic hypotension

This code signifies persistently low systemic arterial blood pressure that is not acute or transient. It describes a long-standing condition where blood pressure readings consistently fall below the normal range, often without an identifiable underlying cause (essential or primary chronic hypotension).

Use this code when documentation clearly indicates a diagnosis of chronic hypotension, typically characterized by sustained systolic blood pressure below 90 mmHg or diastolic blood pressure below 60 mmHg. This applies to patients experiencing symptoms related to low blood pressure, such as dizziness or fatigue, or those being monitored for this condition.

• Differentiate from acute hypotension (e.g., due to shock or dehydration) which would be coded elsewhere.
• Do not use for transient postural hypotension unless it is a persistent, chronic issue.
• Always look for documentation of the cause if known; secondary hypotension due to another condition should be coded with the underlying cause first, if applicable.