Health plan start and end dates

I have three questions:

In general I want to hear if there is a best practice or standard when plans end.

For example if employer has a private health plan that ends April 1st 2024 and is replaced with a plan that begins April 1st 2024. It would seem that there is one day of overlap between the two plans.

Theoretical question:

I'm wondering what the implications would be if someone happened to process a clam on April 1st.

My real life question:

What would/should happen if the continuing coverage is not another private plan but a medicaid-based health plan such as all kids Illinois.

My employer has a non-traditional calendar year. Health plans begin on April 1st and terminate April 1st of the following calendar year. My sormn became AllKids elegable as April 1st, and had enrollment processed in the month prior to April. He received a card from the Blue Cross All Kids community Medicaid plan. This was subsequently canceled due to ineligibility, due to private insurance for one day. The enrollment process had to be initiated again. I've been told that he will be covered under traditional All Kids for the month of April. Beginning May 1st 2024 the original plan that should have started April 1st will begin. This seems overly convoluted.

Thanks for any thoughts on this

submitted by /u/No-Wonder-6956
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