Preterm newborn, gestational age 31 completed weeks

This code identifies a liveborn infant delivered prematurely, specifically at 31 completed weeks of gestation. It signifies a moderate to late preterm birth, indicating a higher risk for various neonatal complications compared to full-term infants.

Assign this code for newborns documented as being delivered at 31 weeks of gestation. Documentation must clearly state the gestational age at birth, typically found in the birth record, physician's notes, or discharge summary. This code is used as a secondary diagnosis following the appropriate Z38.- code for liveborn infant.

• Always sequence a code from category Z38 (Liveborn infants according to place of birth and type of delivery) as the primary diagnosis.
• Confirm "completed weeks" of gestation; do not round up. If documentation states "31 weeks and 2 days," this code is appropriate.
• Differentiate from other preterm codes based on specific gestational week ranges (e.g., P07.33 for 30 weeks, P07.35 for 32 weeks).