Cont preg aft spon abort of one fts or more, first tri, fts2

This code describes a multifetal pregnancy where one or more fetuses were spontaneously aborted during the first trimester, but at least one fetus (specifically identified as fetus 2) continues to develop. It indicates a partial loss within a multiple gestation, with ongoing viability of the remaining fetus(es).

Use this code when documentation confirms a prior spontaneous abortion of one or more fetuses in a multifetal pregnancy during the first trimester, and subsequent ultrasound or clinical assessment verifies the continued viability of at least one other fetus, designated as fetus 2. This applies to cases of vanishing twin syndrome or other partial fetal losses in early multiple gestations.

• Ensure documentation clearly specifies the trimester of the spontaneous abortion and the continued viability of fetus 2.
• Do not confuse with codes for complete spontaneous abortion or elective termination.
• Sequence this code as a secondary diagnosis following the primary code for the ongoing pregnancy (e.g., O30.0- for twin pregnancy).