In a court proceeding Wednesday, U.S. District Judge Amy Berman Jackson set an Oct. 1 deadline for producing the list to the House Oversight and Government Reform Committee.
The Justice Department says the documents should remain confidential and President Barack Obama has invoked executive privilege in an effort to protect them from public disclosure.
The House panel says the Justice Department documents might explain why the department took nearly a year to admit that federal agents had engaged in a controversial law enforcement tactic known as gun-walking.
The Justice Department has long prohibited the risky practice. But the Bureau of Alcohol, Tobacco, Firearms and Explosives used it with disastrous results in a federal law enforcement probe in Arizona, Operation Fast and Furious.
In the operation, federal agents permitted illicitly purchased weapons to be transported unimpeded in an effort to track them to high-level arms traffickers.
Federal agents lost control of some 2,000 weapons and many of them wound up at crime scenes in Mexico and the U.S. Two of the guns were found at the scene of the December 2010 slaying of border agent Brian Terry near the Arizona border city of Nogales.
After Wednesday's court proceeding, Justice Department spokeswoman Emily Pierce said that "we are pleased the judge recognized that executive privilege includes a deliberative process beyond presidential communications" — a point the department has been arguing in its dispute with Congress.
Rep. Darrell Issa, R-Calif., the chairman of the House panel, said that the privilege log "will bring us closer to finding out why the Justice Department hid behind false denials in the wake of reckless conduct that contributed to the violent deaths of border patrol agent Brian Terry and countless Mexican citizens."
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