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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  • P05.13—

    Newborn small for gestational age, 750-999 grams

  • P05.14—

    Newborn small for gestational age, 1000-1249 grams

  • P05.15—

    Newborn small for gestational age, 1250-1499 grams

  • P05.16—

    Newborn small for gestational age, 1500-1749 grams

  • P05.17—

    Newborn small for gestational age, 1750-1999 grams

  • P05.18—

    Newborn small for gestational age, 2000-2499 grams

  • P05.19—

    Newborn small for gestational age, other

  • P05.2—

    Newborn affected by fetal (intrauterine) malnutrition not light or small for gestational age

  • P05.9—

    Newborn affected by slow intrauterine growth, unspecified

  • P07—

    Disorders of newborn related to short gestation and low birth weight, not elsewhere classified

  • P07.0—

    Extremely low birth weight newborn

  • P07.00—

    Extremely low birth weight newborn, unspecified weight

  • P07.01—

    Extremely low birth weight newborn, less than 500 grams

  • P07.02—

    Extremely low birth weight newborn, 500-749 grams

  • P07.03—

    Extremely low birth weight newborn, 750-999 grams

  • P07.1—

    Other low birth weight newborn

  • P07.10—

    Other low birth weight newborn, unspecified weight

  • P07.14—

    Other low birth weight newborn, 1000-1249 grams

  • P07.15—

    Other low birth weight newborn, 1250-1499 grams

  • P07.16—

    Other low birth weight newborn, 1500-1749 grams

  • P07.17—

    Other low birth weight newborn, 1750-1999 grams

  • P07.18—

    Other low birth weight newborn, 2000-2499 grams

  • P07.2—

    Extreme immaturity of newborn

  • P07.20—

    Extreme immaturity of newborn, unspecified weeks of gestation

  • P07.21—

    Extreme immaturity of newborn, gestational age less than 23 completed weeks

  • P07.22—

    Extreme immaturity of newborn, gestational age 23 completed weeks

  • P07.23—

    Extreme immaturity of newborn, gestational age 24 completed weeks

  • P07.24—

    Extreme immaturity of newborn, gestational age 25 completed weeks

  • P07.25—

    Extreme immaturity of newborn, gestational age 26 completed weeks

  • P07.26—

    Extreme immaturity of newborn, gestational age 27 completed weeks

  • P07.3—

    Preterm [premature] newborn [other]

  • P07.30—

    Preterm newborn, unspecified weeks of gestation

  • P07.31—

    Preterm newborn, gestational age 28 completed weeks

  • P07.32—

    Preterm newborn, gestational age 29 completed weeks

  • P07.33—

    Preterm newborn, gestational age 30 completed weeks

  • P07.34—

    Preterm newborn, gestational age 31 completed weeks

  • P07.35—

    Preterm newborn, gestational age 32 completed weeks

  • P07.36—

    Preterm newborn, gestational age 33 completed weeks

  • P07.37—

    Preterm newborn, gestational age 34 completed weeks

  • P07.38—

    Preterm newborn, gestational age 35 completed weeks

  • P07.39—

    Preterm newborn, gestational age 36 completed weeks

  • P08—

    Disorders of newborn related to long gestation and high birth weight

  • P08.0—

    Exceptionally large newborn baby

  • P08.1—

    Other heavy for gestational age newborn

  • P08.2—

    Late newborn, not heavy for gestational age

  • P08.21—

    Post-term newborn

  • P08.22—

    Prolonged gestation of newborn

  • P09—

    Abnormal findings on neonatal screening

  • P09.1—

    Abnormal findings on neonatal screening for inborn errors of metabolism

  • P09.2—

    Abnormal findings on neonatal screening for congenital endocrine disease

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