Multiple gestation, unspecified, second trimester

This code signifies a pregnancy involving more than one fetus where the specific number of fetuses is not documented, and the pregnancy is currently in the second trimester. It indicates a multifetal gestation without further specification regarding the exact count of embryos or fetuses.

Use this code when documentation confirms a multiple gestation during the second trimester, but the medical record does not specify if it's twins, triplets, or more. This code is appropriate when the provider's notes clearly state "multiple gestation, second trimester" without further detail on the number of fetuses.

• Ensure the documentation explicitly states "second trimester" and "multiple gestation" without further specification of the number of fetuses.
• Avoid using this code if the number of fetuses (e.g., twins, triplets) is known and documented; instead, use the more specific O30.0- or O30.1- codes.
• This code should be sequenced as the primary diagnosis when the multiple gestation is the focus of the encounter, followed by codes for any associated complications.