Walter Wyatt, 84, who was general counsel of the Federal Reserve Board and then reporter of decisions for the U.S. Supreme Court during a government career that spanned 46 years, died Sunday at George Washington University Hospital. He had been suffering from heart and lugn ailments.

Mr. Wyatt was born in Savannah, Ga., grew up in Columbus, Ga., and earned his law degree from the University of Virginia in 1917. In that year, he took a job as a clerk in the office of the general counsel of the Federal Reserve Board. In 1922, he was named general counsel, a position he held until his retirement in 1946. From 1936 until 1946, he also served as general counsel for the Fed's open market commission.

From 1946 until his second retirement in 1963, Mr. Wyatt was the Supreme Court's reporter of decisions.

Mr. Wyatt was a past president of the Washington chapter of the University of Virginia Alumni Association and of the University of Virginia Law School Association. He also was a member of the Federal Bar Association, the American Law Institute, the American Judicature Society, and the Order of the Coif. He was a member of the Federal Institute of Genealogy, the Virginia Historical Society, and was a 32rd degree Mason. He was an honorary member of the University of Virginia chapter of Phi Beta Kappa.

Survivors include his wife, Allie Graves Wyatt, of the home in Washington: two daughters. Mrs. Bruce F. Macrae, of Jacksonville, Fla., and Mrs. William Richard (Dick) DeFreitas, of Stamford, conn., and two grandsons.