BETA v.3.0

2025 ICD-10-CM code P08

Disorders of newborn related to long gestation and high birth weight.

When both birth weight and gestational age are known, birth weight should be the primary factor in code selection.The code should only be applied to newborn records and not maternal records.Excludes1 and Excludes2 notes in the official ICD-10-CM manual should be carefully reviewed to ensure proper code assignment.

Medical necessity is established by the presence of clinical findings related to the prolonged gestation and high birth weight. These could include symptoms such as hypoglycemia, polycythemia, respiratory distress, or other complications resulting from these factors.The documentation should support the clinical significance.

Obstetricians, Neonatologists, Pediatricians

IMPORTANT:P08.0 (Exceptionally large newborn), P08.1 (Other heavy for gestational age newborn), P08.2 (Post-term newborn, not heavy for gestational age).If the newborn is preterm, codes P07.2- (extreme immaturity) or P07.3- (preterm newborn) should also be used, along with the appropriate P08 code.Codes P08 cannot be used with P70.0 (syndrome of infant of mother with gestational diabetes) or P70.1 (syndrome of infant of a diabetic mother).

In simple words: This code describes health problems in a newborn baby caused by being born either very late (after the expected due date) or weighing much more than expected for the time spent in the womb. This code is for newborns only, not mothers.

This code encompasses conditions in newborns resulting from prolonged gestation and high birth weight.It includes situations where the birth weight is exceptionally high (4500g or more) or other instances of being heavy for gestational age (typically 4000-4499g, but can also include preterm newborns who are large for gestational age).The code is used when both birth weight and gestational age are available, prioritizing birth weight in assignment.It excludes conditions like congenital malformations (Q00-Q99), endocrine disorders (E00-E88), injuries (S00-T88), neoplasms (C00-D49), and neonatal tetanus (A33).

Example 1: A 42-week gestation newborn weighing 4800g is admitted to the NICU for respiratory distress.P08 is used to code the condition related to prolonged gestation and high birth weight., A 37-week gestation newborn weighing 4200g is born with hypoglycemia and requires intravenous glucose support.P08.1 (Other heavy for gestational age newborn) is assigned to reflect the high birth weight for gestational age., A post-term infant (42 weeks) with a birth weight of 3500g shows signs of post-maturity syndrome, including meconium aspiration. In this case, P08.2 (Post-term newborn, not heavy for gestational age) is the appropriate code.

Detailed documentation is needed, including gestational age at birth (in weeks), birth weight in grams, any signs and symptoms related to the high birth weight or prolonged gestation (e.g., hypoglycemia, respiratory distress, polycythemia), and any interventions or treatments provided.

** Accurate documentation of gestational age and birth weight is crucial for correct code assignment.Consider using additional codes to specify any associated complications (e.g., respiratory distress, hypoglycemia).Always refer to the latest version of the ICD-10-CM manual for the most current coding guidelines.

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