World Health Organization · 2026-01 · English
KA21.4 Preterm newborn
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
Coding notes · WHO
When both birth weight and gestational age are available, priority of assignment must be given to gestational age.
More specific codes
KA21.40Preterm newborn, gestational age 28 completed weeksKA21.41Preterm newborn, gestational age 29 completed weeksKA21.42Preterm newborn, gestational age 30 completed weeksKA21.43Preterm newborn, gestational age 31 completed weeksKA21.44Preterm newborn, gestational age 32 completed weeksKA21.45Preterm newborn, gestational age 33 completed weeksKA21.46Preterm newborn, gestational age 34 completed weeksKA21.47Preterm newborn, gestational age 35 completed weeksKA21.48Preterm newborn, gestational age 36 completed weeksKA21.4ZPreterm newborn, unspecified© World Health Organization · CC BY-ND 3.0 IGO