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KA21.0 Extremely low birth weight of newborn

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

Newborn birth weight 999 g or less. Infants have increased morbidity including neurosensory disability, cerebral palsy, retinopathy of prematurity, deafness, pulmonary immaturity, chronic lung disease and subnormal cognitive function.

sections/codes in this section (KA21.0-KA21.0)

• Extremely low birth weight of newborn, 499g or less  (KA21.00)
• Extremely low birth weight of newborn, 500-749g  (KA21.01)
• Extremely low birth weight of newborn, 750-999g  (KA21.02)
• Extremely low birth weight of newborn, unspecified  (KA21.0Z)

coding note

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

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