Newborn light for gestational age, unspecified weight

This code signifies a newborn infant whose birth weight is below the 10th percentile for their gestational age, without further specification of the exact weight. This condition, also known as small for gestational age (SGA), indicates intrauterine growth restriction (IUGR) and can be associated with various perinatal complications.

Apply this code when documentation clearly states the newborn is "light for gestational age" or "small for gestational age" without specifying a precise weight or other contributing factors. This is typically used when the birth weight falls below the 10th percentile for the infant's gestational age at birth.

• Do not use this code if a specific birth weight is documented; instead, use a more precise code from the P05 category.
• Ensure documentation supports the "unspecified weight" aspect; if a specific weight is known, a more granular code is appropriate.
• Always sequence this code after the primary diagnosis for the newborn's condition, if applicable.