Wyo. Stat. § 26-20-103: Premiums.

If payment of a specific premium or subscription fee is required to provide coverage for a child, the policy or contract may require that notification of birth of a child or the placement for adoption of a child and payment of the required premium or fees shall be furnished to the insurer or nonprofit service or indemnity corporation within thirty-one (31) days after the date of birth or after the date coverage of a child placed for adoption begins in order to have the coverage continue beyond the thirty-one (31) day period.