Maternal hypotension syndrome, first trimester

This code describes a condition where a pregnant patient experiences abnormally low blood pressure specifically during the first trimester of pregnancy. This hypotension can lead to symptoms such as dizziness, lightheadedness, or syncope, potentially affecting maternal well-being and fetal perfusion.

Use this code when documentation clearly indicates a diagnosis of maternal hypotension occurring within the first trimester (weeks 0-13 of gestation). Supporting documentation should include blood pressure readings confirming hypotension and the gestational age at the time of diagnosis.

• Ensure the documentation explicitly states "first trimester" to support the specificity of this code.
• Do not use this code for general hypotension unrelated to pregnancy or for hypotension occurring in later trimesters.
• Code any associated symptoms (e.g., R55 for syncope) as secondary diagnoses if documented.