Maternal care for unstable lie, fetus 4

This code signifies antenatal care provided to a pregnant patient whose fourth fetus is presenting in an unstable or variable position within the uterus, such as oblique or transverse, which can change frequently. This condition poses potential risks during labor and delivery, necessitating close monitoring and management.

Apply this code when documentation explicitly states "unstable lie" or "variable lie" for the fourth fetus during an antepartum encounter. It is appropriate for ongoing management and monitoring of the fetal position before the onset of labor.

• Ensure the documentation clearly specifies "fetus 4" to justify the 4th character.
• Do not confuse with codes for specific malpresentations (e.g., breech, transverse) once the lie is stable.
• Sequence as a primary diagnosis when the unstable lie is the focus of the encounter, or as a secondary diagnosis if another condition is the primary reason for the visit.