Preterm labor with preterm delivery, unsp trimester, fetus 4

This code signifies the onset of labor before 37 completed weeks of gestation, resulting in the delivery of the fourth fetus in a multiple gestation pregnancy. The specific trimester in which the preterm labor and delivery occurred is not documented or is unknown. It indicates a premature birth event for a specific fetus within a multifetal pregnancy.

Use this code when documentation clearly states preterm labor leading to preterm delivery of the fourth fetus, and the trimester of occurrence is not specified. This applies to scenarios where the patient presents with contractions and cervical changes prior to 37 weeks, culminating in the birth of the fourth baby. Supporting documentation includes delivery notes, labor and delivery records, and physician notes confirming preterm labor and delivery of fetus 4.

• Always sequence this code after the primary obstetric complication code, if applicable.
• Ensure the documentation explicitly identifies "fetus 4" in a multiple gestation.
• Do not use this code if the trimester is known; instead, select the appropriate O60.1x_ codes specifying the trimester.