In an obituary on Isadore Irving Freidson, a retired Interstate Commerce Commission administrative law judge, which appeared in Saturday's editions of The Washington Post, an incorrect cause of death was given. Mr. Freidson died Tuesday at his home in Falls Church after a heart attack.

Isadore Irving Freidson, 73, an administrative law judge with the Interstate Commerce Commission who retired in 1974 after almost 40 years of service with the agency, died Tuesday at his home in Falls Church. He had cancer.

Mr. Freidson was born in Kiev, Russia, and came to the United States with his family a year later. They lived in Minneapolis until he was 10 years old and then moved to Washington. Mr. Freidson attended old Central High School and received bachelor's and law degrees from George Washington University.

He began his career with the government in 1928. He worked for the Commerce and Agriculture departments and the old Bureau of Internal Revenue before joining the ICC in 1936.

He began there as an examiner and specialized in legislation concerning motor carriers and bus lines. In 1951, he was appointed as a hearing examiner, deciding matters over which the ICC had administrative jurisdiction. In 1972, the title of hearing examiner was changed to administrative law judge. Mr. Freidson remained an administrative law judge for the ICC until his retirement.

He was a member of the Federal Administrative Law Judges Conference, the ICC Board of Review and the Federal Bar Association. He was also a member of Beth El Hebrew Congregation in Alexandria.

Survivors include his wife, Faye R., of Falls Church; a son, Paul Edward, of Orlando, Fla.; a daughter, Joan Dharani Bluestone of New York City; a brother, Morris of Alexandria, and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Maurice D. Rosenberg Heart Fund, c/o Beth El Hebrew Congregation of Northern Virginia, 3830 Seminary Rd., Alexandria. h