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

This code describes a multifetal pregnancy where one or more fetuses have been spontaneously aborted, but at least one fetus continues to be viable. It specifically applies when the trimester of the initial spontaneous abortion is not documented and refers to the second fetus in the continuing pregnancy.

Use this code when documentation clearly indicates a multifetal gestation with a partial spontaneous abortion, and the remaining fetus(es) are still viable. This code is appropriate when the specific trimester of the fetal loss is unknown and the encounter pertains to the second fetus. Supporting documentation would include ultrasound reports confirming multifetal pregnancy and partial loss, and clinical notes detailing the ongoing viability of at least one fetus.

• Always sequence this code after the primary code for the ongoing pregnancy (e.g., O30.-).
• Ensure the documentation specifies "fetus 2" to justify the 7th character.
• Do not use if the trimester of the spontaneous abortion is known; instead, use the more specific O31.11- or O31.12- codes.