Disorders of newborn related to long gestation and high birth weight (P08)

ICD-10 code P08 covers disorders of newborns related to unusually long pregnancy durations and high birth weights. These codes are used to identify and classify newborns who are either exceptionally large or born after prolonged gestation.

The ICD-10 code for exceptionally large newborns (P08.0) applies to babies with birth weights equal to or exceeding 4499 grams, also described as "exceptionally large," "high birth weight," or "birth weight abnormality." Meanwhile, P08.1 is for newborns who are "large for gestational age," typically weighing between 4050 and 4499 grams, often noted as "heavy for gestational age" or showing abnormal birth weight centiles. Codes P08.2, P08.21, and P08.22 are used for newborns born after extended pregnancies but who do not have high birth weight, including terms like "post-term newborn" and "postmaturity syndrome." These distinctions help healthcare professionals and coders accurately document conditions in babies experiencing risks related to prolonged gestation or elevated birth weight.