Coinsurance
The percentage of medical costs you pay after meeting your deductible.
Coinsurance (typically 10-30%) is the portion of cost you pay after the deductible. Out-of-pocket maximums cap your total annual exposure.
What this means for you: international medical travel typically isn't subject to coinsurance — you pay the full bill. Some insurers reimburse based on "reasonable and customary" rates after the fact.
What a term means for you depends on your own reports. Ask your treating doctor, or send your reports for a free review.