All ICD10 Codes
Chapter 16

P00–P96: Certain Conditions Originating in the Perinatal Period

Certain Conditions Originating in the Perinatal Period diagnostic classification updated for 2026.

Chapter Instructions

Includes
  • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
Excludes2(Not included here. Code separately if applicable.)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • tetanus neonatorum (A33)
All CodesBillable Only
Internal Codes
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  • P70.4—

    Other neonatal hypoglycemia

  • P70.8—

    Other transitory disorders of carbohydrate metabolism of newborn

  • P70.9—

    Transitory disorder of carbohydrate metabolism of newborn, unspecified

  • P71.0—

    Cow's milk hypocalcemia in newborn

  • P71.1—

    Other neonatal hypocalcemia

  • P71.2—

    Neonatal hypomagnesemia

  • P71.3—

    Neonatal tetany without calcium or magnesium deficiency

  • P71.4—

    Transitory neonatal hypoparathyroidism

  • P71.8—

    Other transitory neonatal disorders of calcium and magnesium metabolism

  • P71.9—

    Transitory neonatal disorder of calcium and magnesium metabolism, unspecified

  • P72.0—

    Neonatal goiter, not elsewhere classified

  • P72.1—

    Transitory neonatal hyperthyroidism

  • P72.2—

    Other transitory neonatal disorders of thyroid function, not elsewhere classified

  • P72.8—

    Other specified transitory neonatal endocrine disorders

  • P72.9—

    Transitory neonatal endocrine disorder, unspecified

  • P74.0—

    Late metabolic acidosis of newborn

  • P74.1—

    Dehydration of newborn

  • P74.21—

    Hypernatremia of newborn

  • P74.22—

    Hyponatremia of newborn

  • P74.31—

    Hyperkalemia of newborn

  • P74.32—

    Hypokalemia of newborn

  • P74.41—

    Alkalosis of newborn

  • P74.421—

    Hyperchloremia of newborn

  • P74.422—

    Hypochloremia of newborn

  • P74.49—

    Other transitory electrolyte disturbance of newborn

  • P74.5—

    Transitory tyrosinemia of newborn

  • P74.6—

    Transitory hyperammonemia of newborn

  • P74.8—

    Other transitory metabolic disturbances of newborn

  • P74.9—

    Transitory metabolic disturbance of newborn, unspecified

  • P76.0—

    Meconium plug syndrome

  • P76.1—

    Transitory ileus of newborn

  • P76.2—

    Intestinal obstruction due to inspissated milk

  • P76.8—

    Other specified intestinal obstruction of newborn

  • P76.9—

    Intestinal obstruction of newborn, unspecified

  • P77.1—

    Stage 1 necrotizing enterocolitis in newborn

  • P77.2—

    Stage 2 necrotizing enterocolitis in newborn

  • P77.3—

    Stage 3 necrotizing enterocolitis in newborn

  • P77.9—

    Necrotizing enterocolitis in newborn, unspecified

  • P78.0—

    Perinatal intestinal perforation

  • P78.1—

    Other neonatal peritonitis

  • P78.2—

    Neonatal hematemesis and melena due to swallowed maternal blood

  • P78.3—

    Noninfective neonatal diarrhea

  • P78.81—

    Congenital cirrhosis (of liver)

  • P78.82—

    Peptic ulcer of newborn

  • P78.83—

    Newborn esophageal reflux

  • P78.84—

    Gestational alloimmune liver disease

  • P78.89—

    Other specified perinatal digestive system disorders

  • P78.9—

    Perinatal digestive system disorder, unspecified

  • P80.0—

    Cold injury syndrome

  • P80.8—

    Other hypothermia of newborn

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