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KA21.4 Preterm newborn

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Preterm: is less than 37 completed weeks (less than 259 days) of gestation.

sections/codes in this section (KA21.4-KA21.4)

• Preterm newborn, gestational age 28 completed weeks  (KA21.40)
• Preterm newborn, gestational age 29 completed weeks  (KA21.41)
• Preterm newborn, gestational age 30 completed weeks  (KA21.42)
• Preterm newborn, gestational age 31 completed weeks  (KA21.43)
• Preterm newborn, gestational age 32 completed weeks  (KA21.44)
• Preterm newborn, gestational age 33 completed weeks  (KA21.45)
• Preterm newborn, gestational age 34 completed weeks  (KA21.46)
• Preterm newborn, gestational age 35 completed weeks  (KA21.47)
• Preterm newborn, gestational age 36 completed weeks  (KA21.48)
• Preterm newborn, unspecified  (KA21.4Z)

coding note

When both birth weight and gestational age are available, priority of assignment must be given to gestational age.

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