Oligohydramnios, unspecified trimester, fetus 5

This code indicates a reduced amount of amniotic fluid surrounding the fetus, where the specific trimester of gestation is not documented. It specifically identifies this condition as affecting the fifth fetus in a multiple gestation pregnancy.

Apply this code when the medical record clearly states oligohydramnios in a multiple gestation pregnancy, and the specific trimester is not documented. Documentation should specify "fetus 5" or equivalent identification for the affected fetus.

• Ensure documentation explicitly identifies the affected fetus as the fifth in a multiple gestation.
• If the trimester is known, a more specific code from the O41.0- series should be used.
• Always sequence this code after the primary obstetric complication or condition, if applicable.