You can get TRICARE for your child in two steps:
You don't need a Social Security number to register your child in DEERS. Once you have one, update DEERS with that number. >>Learn More
How you enroll your new child depends on who you are. This includes newborns, newly adopted children, and children placed with sponsors as wards.
Active Duty Family Members
When do I need to register my child in DEERS?
What happens when I register my child in DEERS?
What if I register my child in DEERS late?
You need to register your child in DEERS within one year (365 days) of his or her birth or adoption. On day 366, your child won’t be able to receive benefits until you register them in DEERS.
Last Updated 10/25/2018
Find an ID Card Office
Social Security Administration
Eligibility for Children