Idiopathic hypotension

This code represents abnormally low blood pressure without an identifiable underlying cause. It signifies a primary, intrinsic dysfunction in blood pressure regulation, rather than hypotension secondary to another medical condition, medication, or volume depletion.

This code is appropriate when a patient presents with persistent low blood pressure and a thorough diagnostic workup has ruled out all known secondary causes of hypotension, such as dehydration, cardiac issues, endocrine disorders, or medication side effects. Documentation should explicitly state "idiopathic hypotension" or "primary hypotension" after a comprehensive evaluation.

• Ensure documentation clearly states "idiopathic" or "primary" and that secondary causes have been excluded.
• Do not use this code for orthostatic hypotension (I95.1) or hypotension due to other specified causes (I95.8-).
• Always review the patient's medical record for any potential underlying conditions that might explain the hypotension before assigning this code.