* Halliburton up after results, Citi on tap
* Greece denies debt restructure plan
* China hikes bank reserve requirements
* Futures off: Dow 65 pts, S&P 9.6 pts, Nasdaq 13 pts
* For up-to-the-minute market news see [STXNEWS/US] (Adds comment, updates prices)
By Chuck Mikolajczak
NEW YORK, April 18 (Reuters) - U.S. stock index futures fell on Monday before a raft of corporate earnings, including Citigroup, as investors weigh whether corporate results and outlooks will be hurt by rising commodity costs.
Citigroup Inc
"The market is underwhelmed by the early earnings releases," said Peter Kenny, managing director at Knight Capital in Jersey City, New Jersey.
"Input costs are driving more and more of the concern, and they are significantly less manageable than pushing consumer demand, or even industrial demand. It is a problem; it could really kind of make the rebound enter an anemic phase."
Halliburton Co
Eli Lilly & Co
Also due to report on Monday is Texas Instruments
China raised banks' required reserves for the fourth time this year on Sunday, stepping up efforts to fight high inflation. [ID:nL3E7FH05Y]
Athens repeated it has no plans to restructure its debt, denying a Greek media report it had requested talks with its lenders as speculation that it would need a restructuring hit debt markets and the euro. [ID:nLDE73H0M1]
S&P 500 futures
Healthcare stocks will be in the spotlight after Swiss
medical device maker Synthes
NYSE Euronext
Renewed euro zone debt concerns hit European shares, sending a key index into negative territory for the year. [.EU]
Stocks in Asia ex-Japan remained flat, with investors unconvinced that China's latest moves to cool its economy would hurt the global recovery. [ID:nL3E7FI0FF] (Reporting by Chuck Mikolajczak; Editing by Kenneth Barry)