PA 93 was designated in 1927 between US 309/PA 22 in Hazleton and US 11/PA 19 in Berwick while US 309/PA 22 was designated onto the road between Nesquehoning and Hazleton. A year later, PA 93 was extended to PA 339 (now PA 487) in Orangeville and the PA 22 designation was removed from US 309. In the 1930s, the south end of PA 93 was truncated to PA 29 (now PA 239) southeast of Nescopeck, with PA 29 replacing the route southeast to Hazleton. PA 93 was extended north to PA 115 (now PA 254) in Rohrsburg in the 1940s. A realigned PA 29 replaced the US 309 designation between Nesquehoning and Hazleton in the 1950s. On May 9, 1966, PA 93 was extended southeast to US 209 in Nesquehoning, replacing that section of PA 29, while the north end was cut back to PA 487 in Orangeville in the 1960s.