Prolonged gestation of newborn

This code signifies a newborn infant whose gestational age at birth was beyond the typical full-term period, specifically 42 completed weeks (294 days) or more. This condition can lead to various health concerns for the neonate due to the extended time in utero.

Assign this code when documentation clearly indicates a newborn delivered at 42 weeks gestation or later. This diagnosis is typically supported by the obstetrician's records, pediatric assessment, and the newborn's physical examination findings consistent with post-maturity.

• Always confirm the exact gestational age at birth from the medical record, typically documented in the birth summary or pediatric notes.
• Do not confuse this with large for gestational age (LGA) or post-term delivery without specific documentation of 42+ weeks.
• This code is for the newborn's condition; the mother's prolonged gestation would be coded separately from Chapter 15.