That’s not what happens, nor is it made clear in that glossary.
Where a copayment is specified for a service, that service is does not fall under the “deductible” concept at all. If your copayment for a doctor visit is $50, then you will always contribute exactly $50 for that service.
For example, your plan has a deductible of $1000, copay for a doctor visit $50. On January 1st, you go to the doctor. The doctor’s bill is $350. Of that, you pay $50, your insurer pays $300. The deductible does not come into the reckoning at all. Later in the year, you have a minor operation. For this, you must pay the first $1000 of costs to meet your deductible. Subsequently, you make another visit to your doctor. You must still make a $50 copayment.
In a nutshell, the reckoning for services where copayment is specified is completely separate from service where no copayment is specified. The deductible concept only applies to the latter.
Always be aware that there are many provisos and caveats to anything in the US health care system. Is the doctor is in-network? Does the entire service that the doctor is providing actually fall under what’s included in that category of copayment service? Are there additional costs for tests or scans that are treated separately, to which your deductible payment may apply? etc., etc.