Cont preg aft uterin dth of one fts or more, first tri, fts3

This code signifies a multifetal pregnancy where one or more fetuses have demised within the first trimester, but at least one other fetus continues to develop. It specifically identifies the third fetus as the one that has experienced intrauterine death. This scenario often involves a "vanishing twin" phenomenon or other forms of selective fetal demise.

Apply this code when documentation clearly indicates a multifetal pregnancy (e.g., triplets or more) with confirmed intrauterine demise of the third fetus during the first trimester, and the pregnancy is ongoing with at least one viable fetus. Supporting documentation includes ultrasound reports confirming multifetal gestation, fetal demise of the specified fetus, and continued viability of other fetuses.

• Ensure the documentation specifies "fetus 3" for the demise; otherwise, a different character for the fetus number may be required.
• Verify the trimester of demise; this code is specific to the first trimester.
• Always sequence this code as a secondary diagnosis, following the code for the ongoing multifetal pregnancy (e.g., O30.1- for triplet pregnancy).