Health Insurance Adjustment

I originally asked a question about how to fix an error in our Health Insurance Adjustment.  While waiting for a reply, I found the same error in our prior year, and because TT hadn't marked it as an error, I thought it was OK.  I didn't get any answers to that original question, but was concerned, so I researched the posts in the Community and found a solution, and made the correction.  As it turns out, I completed the request to enter SSA-1099 information in the Business section of our file, but found in my research that the Medicare portion should not be entered there, but later. 

 

Now I need to know if I need to amend prior year(s) if it had the same error?  Thank you.