These are post-term infants with signs of dysmaturity. These infants are the consequence of chronic placental insufficiency and often have the following physical findings: long fingernails often stained by meconium, abundant scalp hair, wrinkled and or peeling skin, hyperalert facies little or no vernix, long, thin growth retarded body with long thin limbs.
Coding note
When both birth weight and gestational age are available, priority of assignment should be given to birth weight.