"McKesson's Hilton code N9890367 is for the pharmaceutical distribution giant. McKesson HQ is in Irving TX (relocated from San Francisco). Healthcare sector codes at Hilton carry moderate enforcement risk — similar to pharma company codes. Hilton's London thread documented systematic enforcement for corporate codes; McKesson has UK operations. US domestic Hilton: 20% general verification rate. No McKesson-specific denial documented at Hilton, but corporate contracts with major pharma distributors are closely monitored."

"but there is a specific Hilton.com URL we use for reservations (which is accessible not just from our corporate network) - booked a rate for tomorrow night for around 50% of what the cheapest Honors rate was - I have not had any communication from the hotel requesting proof of eligibility. ."

"My point is only that this does happen and it can be problematic for those that work for a company that has great negotiated rates and the provider requires identification."