Barbara Bosson, the domestic fighter of ‘Hill Street Blues,’ has died at the age of 83.

Barbara Bosson, who turned a fleeting cameo as an impatient single mother on the popular station-house drama series “Hill Street Blues” into a recurrent role as a police captain’s tenacious ex-wife, died Feb. 18 at a hospital in Santa Monica, Calif. She was 83 years old.

Jesse Bochco, her son, confirmed her death but did not explain.

During its 1981-1987 run, “Hill Street Blues,” co-created by Ms. Bosson’s then-husband, Steven Bochco, reinvented the police show genre with cinéma vérité-style camera work and characters with flaws, fears, and contradictions on full display. Few characters carried as much emotional weight as Ms. Bosson’s Fay Furillo.