In simple words: This code is used when a woman is pregnant with multiples, chooses to reduce the number of fetuses, and continues the pregnancy with the remaining fetus(es).

This code describes a continuing pregnancy after an elective fetal reduction procedure where one or more fetuses were terminated.This is specific to multiple gestations.

Example 1: A woman pregnant with triplets undergoes a selective reduction at 12 weeks, leaving her with twins. The code O31.3 would be used., A woman is pregnant with quadruplets. She decides to have a multifetal pregnancy reduction to twins at 15 weeks gestation. Code O31.3 would be used for the remainder of the pregnancy., A patient with a twin pregnancy undergoes selective termination of one fetus at 10 weeks due to severe anomalies. The remaining fetus is healthy and the pregnancy continues. The code O31.3 would apply.

Documentation should include details about the multifetal pregnancy, the decision for and procedure of fetal reduction, and confirmation of continuing pregnancy with the remaining fetus or fetuses. Ultrasound reports, procedural notes, and clinical progress notes are key.

** This code captures the continuing pregnancy status *after* a fetal reduction procedure.It is distinct from codes describing complications *of* the procedure itself. It is important to differentiate between spontaneous fetal loss and elective reduction, as they have different codes.