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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  • P80.9—

    Hypothermia of newborn, unspecified

  • P81.0—

    Environmental hyperthermia of newborn

  • P81.8—

    Other specified disturbances of temperature regulation of newborn

  • P81.9—

    Disturbance of temperature regulation of newborn, unspecified

  • P83.0—

    Sclerema neonatorum

  • P83.1—

    Neonatal erythema toxicum

  • P83.2—

    Hydrops fetalis not due to hemolytic disease

  • P83.30—

    Unspecified edema specific to newborn

  • P83.39—

    Other edema specific to newborn

  • P83.4—

    Breast engorgement of newborn

  • P83.5—

    Congenital hydrocele

  • P83.6—

    Umbilical polyp of newborn

  • P83.81—

    Umbilical granuloma

  • P83.88—

    Other specified conditions of integument specific to newborn

  • P83.9—

    Condition of the integument specific to newborn, unspecified

  • P84—

    Other problems with newborn

  • P90—

    Convulsions of newborn

  • P91.0—

    Neonatal cerebral ischemia

  • P91.1—

    Acquired periventricular cysts of newborn

  • P91.2—

    Neonatal cerebral leukomalacia

  • P91.3—

    Neonatal cerebral irritability

  • P91.4—

    Neonatal cerebral depression

  • P91.5—

    Neonatal coma

  • P91.60—

    Hypoxic ischemic encephalopathy [HIE], unspecified

  • P91.61—

    Mild hypoxic ischemic encephalopathy [HIE]

  • P91.62—

    Moderate hypoxic ischemic encephalopathy [HIE]

  • P91.63—

    Severe hypoxic ischemic encephalopathy [HIE]

  • P91.811—

    Neonatal encephalopathy in diseases classified elsewhere

  • P91.819—

    Neonatal encephalopathy, unspecified

  • P91.821—

    Neonatal cerebral infarction, right side of brain

  • P91.822—

    Neonatal cerebral infarction, left side of brain

  • P91.823—

    Neonatal cerebral infarction, bilateral

  • P91.829—

    Neonatal cerebral infarction, unspecified side

  • P91.88—

    Other specified disturbances of cerebral status of newborn

  • P91.9—

    Disturbance of cerebral status of newborn, unspecified

  • P92.01—

    Bilious vomiting of newborn

  • P92.09—

    Other vomiting of newborn

  • P92.1—

    Regurgitation and rumination of newborn

  • P92.2—

    Slow feeding of newborn

  • P92.3—

    Underfeeding of newborn

  • P92.4—

    Overfeeding of newborn

  • P92.5—

    Neonatal difficulty in feeding at breast

  • P92.6—

    Failure to thrive in newborn

  • P92.8—

    Other feeding problems of newborn

  • P92.9—

    Feeding problem of newborn, unspecified

  • P93.0—

    Grey baby syndrome

  • P93.8—

    Other reactions and intoxications due to drugs administered to newborn

  • P94.0—

    Transient neonatal myasthenia gravis

  • P94.1—

    Congenital hypertonia

  • P94.2—

    Congenital hypotonia

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