Placental infarction, first trimester

This code signifies the presence of an area of ischemic necrosis within the placenta during the first trimester of pregnancy. This condition results from an interruption of blood supply to a portion of the placenta, potentially impacting fetal development and pregnancy viability.

Use this code when documentation explicitly states placental infarction identified during the first trimester. This diagnosis is often made via ultrasound or pathological examination of placental tissue. Supporting documentation should clearly indicate the trimester of diagnosis.

• Ensure the documentation specifies "infarction" and not merely "abnormal placenta" for accurate coding.
• Verify the trimester of diagnosis; this code is specific to the first trimester.
• Consider co-occurring conditions such as pre-eclampsia or thrombophilia, which may predispose to placental infarction.