Maternal hypotension syndrome, second trimester

This code identifies a condition where a pregnant patient experiences abnormally low blood pressure during the second trimester of pregnancy, leading to symptoms such as dizziness, lightheadedness, or syncope. This hypotension is directly attributable to the physiological changes of pregnancy, often due to compression of the great vessels by the gravid uterus.

Assign this code when documentation explicitly states maternal hypotension syndrome occurring specifically in the second trimester. This typically arises when the patient presents with symptoms of low blood pressure and the provider attributes it to the pregnancy, ruling out other causes. Look for provider notes indicating "maternal hypotension," "supine hypotensive syndrome," or similar terms, with a clear gestational age reference.

• Ensure the documentation specifies "second trimester" to differentiate from other gestational periods.
• Do not use this code for general maternal hypotension without a clear indication of a "syndrome" or related symptoms.
• Consider sequencing this code as a secondary diagnosis if the primary reason for the encounter is a complication directly resulting from the hypotension.