Cont preg aft spon abort of one fetus or more, 2nd tri, fts4

This code signifies a multifetal pregnancy where one or more fetuses have been spontaneously aborted, but at least one fetus continues to develop beyond the first trimester. It specifically applies to the second trimester of the ongoing pregnancy, with the "4" indicating the fourth fetus in a multiple gestation.

Use this code when documentation confirms a prior spontaneous abortion of one or more fetuses in a multifetal pregnancy, and the remaining fetus(es) are still viable and the pregnancy is in the second trimester. Documentation should clearly specify the number of fetuses involved and the trimester of the continuing pregnancy.

• Ensure the documentation explicitly states the pregnancy is in the second trimester and identifies the specific fetus (e.g., "fetus 4").
• Do not confuse with codes for blighted ovum or missed abortion of all fetuses; this code is for a continuing pregnancy.
• Always sequence this code as a secondary diagnosis, with the primary diagnosis typically being the reason for the encounter related to the ongoing pregnancy.