Dorothy Whitney Shute Ragan, 84, a former music teacher and a retired chief of the adjudication division at the Treasury Department, died Thursday at the Fernwood House Retirement and Nursing Center in Bethesda after a heart attack.

Mrs. Ragan was born in Chicago. She earned a bachelor's degree from the Sherwood School of Music in Chicago and taught music in New Orleans before moving to Washington in 1933 to work for the Treasury Department.

Besides adjudicating claims involving lost and stolen federal checks, Mrs. Ragan taught Treasury Department policy to graduate students as interns on government training programs. She received the Treasury Department's Albert Gallatin Award for meritorious services.

Mrs. Ragan was president of the League of Republican Women of D.C. from 1971 to 1973.

She was a former regent of the D.C. society of the Daughters of the American Colonists and an honorary state regent of the D.C. society of the Daughters of the American Revolution. She also served as vice president general of the national society of the Daughters of the American Revolution. g

She was a trustee of the Capitol Historical Society and a member of the Columbia Historical Society, the Freedoms Foundation at Valley Forge, the D.C. Court of Assistants and the National Society of Women's Descendents of the Ancient and Honorable Artillery Company. She attended St. Alban's Episcopal Church.

The widow of John J. Ragan, she left no immediate survivors.