Would like to query on insurance exclusion clause for "Pre-Existing Illnesses".

I had an accident and have a internal fixation on my arm since Nov 2018. Back then I was using my family's corporate insurance coverage for the surgery & treatment under MiCare Plan. Right now I'm not covered since 2019 under that plan.

Would like to know if I were to purchase a separate insurance plan on my own, does wanting to take out the internal fixation to be covered under the new insurance plan considered as Pre-Existing Illnesses?

Thank you.

Excluded meaning not covered?
What if I were to get back to the insurance from the time I had done the surgery?