Originally Posted by vsevolod4

Don't call IHG -- has nothing to do with them.
Don't call Chase -- it will take forever.

Simply log into chase.com, and click on the "hamburger menu" (3 parallel lines) icon in the top-left and select "Secure Messages" -- select "Compose Message"
Select "Rewards Inquiry" next to "Credit Cards and Products" and which credit card, and "Other Rewards Inquiry."
Note can be quick and to the point:
Reference the date and the name of the hotel, and that this hotel is apparently not coded as an InterContinental Hotels Group hotel, and please correct this.
If the name of the hotel doesn't have the word "INTERCONTINENTAL" or "CROWNE PLAZA" or "HOLIDAY INN," etc., make it easier for them to do their research and provide a link to the hotel on the IHG website (especially Kimpton Hotel or hotel that's listed by its name without an obvious identifier).
For example:

That's all.

Within an hour you'll get an automatic acknowledgement "We received your message."
Within about 24 hours or so you'll get a note such as:


Easy-peasy.
I do this about once a month; I'd say 95% are coded correctly, but as there are constantly new hotels opening, and the management of existing hotels changes, or they change credit card merchants (reasonably common, especially of late when the IC hotels have been changing to a new guest registation system), 5% are not. So for example, the IC Yokohama must have changed merchants because suddenly I'm not getting the 10x points (previously 5x on my old card).

I have never had problems with hotel stays; Chase has always come through
My only unsatisfied hassle has been with hotel restaurants that are independently owned and have their own credit card system. Ditto parking garages. Sometimes these will not credit, since the restaurant or the parking lot isn't owned by the hotel. Solution: Always put the meals (and anything else you can) on the hotel bill. Ditto ParThat way you are sure to get the 10x hotel points on Chase, and depending on the kind of charge, you may also get regular IHG rewards points. I put everything possible on the hotel bill, for example the limousine bus tickets from a Japanese hotel -- at least you get 10x Chase points since it's on your room bill.