Cont preg aft spon abort of one fts or more, third tri, unsp

This code describes a multifetal pregnancy where one or more fetuses have been spontaneously aborted, but at least one fetus continues to be viable and the pregnancy has progressed into the third trimester. It signifies a partial loss within a multiple gestation, with the remaining pregnancy ongoing.

Use this code when documentation clearly indicates a prior spontaneous abortion of one or more fetuses in a multiple gestation, and the patient is currently in the third trimester with at least one viable fetus. This scenario is often identified during routine prenatal care or when complications arise in the remaining viable fetus(es).

• Ensure documentation specifies "third trimester" for the continuing pregnancy.
• Always sequence this code after the primary code for the ongoing pregnancy, such as O30.- for multiple gestation.
• Do not confuse with codes for complete spontaneous abortion (O03.-) or missed abortion (O02.1) when a viable fetus remains.