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.
Learning and Development: Infants Birth to 12 Months. Babies grow and develop faster in the first year than any other year. During the first six months of life, babies gradually gain information about the world around them. Babies younger than six months depend mainly on their caregivers for their daily experiences.