Cont preg aft spon abort of one fts or more, first tri, fts3

This code describes a multifetal pregnancy where one or more fetuses have been spontaneously aborted (miscarried) during the first trimester, but at least one fetus remains viable and the pregnancy is continuing. Specifically, it identifies the third fetus in a multifetal gestation as the one that was spontaneously aborted.

Use this code when documentation confirms a multifetal pregnancy (e.g., triplets or more) with a partial spontaneous abortion occurring in the first trimester, and the third fetus is identified as the one that miscarried. This code is appropriate when the remaining fetus(es) continue to develop.

• Ensure documentation clearly specifies the trimester of the spontaneous abortion and the specific fetus (e.g., "fetus 3") that was lost.
• This code requires a seventh character for the trimester of the continuing pregnancy, which is implicitly the first trimester for the spontaneous abortion event.
• Do not confuse with codes for complete spontaneous abortion or elective termination of pregnancy.