"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."

"I spent 5 bucks and printed a business card and ID for the code I use the most."

"- Marriott (CORP): Please be prepared to show proof of eligibility for your rate (such as a membership card, corporate or government identification card, or proof of your age). - Marriott (GOV): Federal Govt issued Visa, MasterCard, American Express, or Federal Govt picture ID (CAC or Common Access Card) - Hilton (CORP): No ID requirements listed - Hilton (GOV): Id-travel orders required at checkin"