ICD-11 classes
19 Certain conditions originating in the perinatal period
Disorders of newborn related to length of gestation or...
KA21 — Disorders of newborn related to short gestation or low...

ICD-11 KA21 — Disorders of newborn related to short gestation or low birth weight, not elsewhere classified

Infants whose weight is appropriate for their gestational ages are termed appropriate for gestational age (AGA). Infants that are heavier than expected are large for gestational age (LGA). Conversely, those smaller than expected are considered small for gestational age (SGA).

The diagnosis includes nothing.

Diagnosis with code KA21 contains 5 clarifying diagnoses:

1. KA21.0 — Extremely low birth weight of newborn
   It contains 4 clarifying diagnoses.
2. KA21.1 — Very low birth weight of newborn
   It contains 3 clarifying diagnoses.
3. KA21.2 — Low birth weight of newborn
   It contains 3 clarifying diagnoses.
4. KA21.3 — Extreme prematurity of newborn
   It contains 8 clarifying diagnoses.
5. KA21.4 — Preterm newborn
   It contains 10 clarifying diagnoses.