1 Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes. 2  This is the American ICD-10-CM version of J11.1. 3  Other international ICD-10 versions may differ.
It takes approx. 36-40 weeks for the baby to be fully developed. Before that, the baby is premature and might have to spend some time in an incubator.
The Mayo Clinic says that babies grow about 1/2 inch to an inch per month during the first six months of life. From 6 to 12 months, most babies grow about 3/8 inch per month. A baby's length may not be as important as a baby's rate of growth.