KA21.3

The ICD-11 code for extreme prematurity of newborn is KA21.3. The full clinical description is "Extreme prematurity of newborn".

ICD-11 code KA21.3 represents “Extreme prematurity of newborn”. It is classified under Chapter 19: Certain Conditions Originating in the Perinatal Period.

KA21.3 is in Chapter 19: Certain Conditions Originating in the Perinatal Period (codes KA00-KD5Z).

There is no direct ICD-10 mapping available for KA21.3 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-10. Use the ICD-11 to ICD-10 converter to search for related codes.

ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.

KA21.3 has 8 child codes, including: KA21.30 (Extreme prematurity of newborn, gestational age less than 22 completed weeks), KA21.31 (Extreme prematurity of newborn, gestational age 22 completed weeks), KA21.32 (Extreme prematurity of newborn, gestational age 23 completed weeks), KA21.33 (Extreme prematurity of newborn, gestational age 24 completed weeks), and 4 more.