https://hypesystems.zohodesk.com/portal/en/kb/articles/how-to-check-ohip-fee-relativity-rate-increases-on-your-ra-after-april-1-2026 explains the same content in a different writing style. 
So the idea is:
1. Bill the service normally
Use the regular code from the Schedule.
2. Look at your RA later
The RA is like a report card that shows what OHIP paid you.
3. Check if the payment is a little bigger
If you are in the regular family doctor FFS group (00_2), the payment should usually be about 6.2901% more than the basic listed fee. The 2026/27 ministry memo says family medicine has different buckets, and 00_2 Family Medicine – FFS gets 6.2901%. It also says the basic fee is multiplied by the rate for your bucket.
For a typical FFS family doctor in 00_2, you can usually do this:
RA spot-check = listed fee × 1.062901
Example:
So, in very plain words:
Check the bottom of this page for your Specialty's Relativity Rate. Attached you will also find a PDF copy of the PHYSICIAN SERVICES AGREEMENT.
Bill your normal fee + your bucket increase = about what you should get paid
But this is only the simple check.
Sometimes the number can be different because:

So the easiest way to remember it is:
Bill normally.
Then check the RA.
See if the amount paid is about the normal fee plus your specialty increase.