Triplet preg, unsp num plcnta & amnio sacs, third trimester

This diagnosis code indicates a pregnancy involving three fetuses, where the specific details regarding the number of placentas (chorionicity) and amniotic sacs (amnionicity) are not documented. The pregnancy has progressed into the third trimester.

Apply this code when documentation confirms a triplet gestation in the third trimester, but there is no explicit mention of whether the fetuses share placentas or amniotic sacs. This is appropriate when the provider has not specified chorionicity or amnionicity, or when these details are unknown at the time of coding.

• Do not use if chorionicity or amnionicity is documented; instead, select a more specific O30.1 code.
• Ensure the medical record clearly indicates "triplet pregnancy" and "third trimester."
• This code should be sequenced as a primary diagnosis when the triplet pregnancy is the focus of the encounter.