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.
Infant development: Birth to 3 months. Infant development begins at birth. Consider major infant development milestones from birth to 3 months â and know what to do when something's not right. A lot happens during your baby's first three months.