CNN  — 

Steven Bochco, a producer whose boundary-pushing series like “Hill Street Blues” and “NYPD Blue” helped define the modern TV drama, died Sunday after a battle with leukemia. He was 74.

Bochco died Sunday morning at home, surrounded by family, according to Phillip Arnold, Bochco’s personal assistant.

Bochco co-created several of TV’s most popular programs, while his large ensemble casts and ambitious storytelling set a benchmark beginning in the early 1980s that he refined and built upon for more than 30 years. Bochco also consciously set out to establish new, more permissive standards for broadcast television with “NYPD Blue,” meticulously negotiating what was acceptable in terms of language and nudity with then-ABC Entertainment chief (and now CEO of the Walt Disney Co.) Robert Iger, even drawing naked figures to help set the ground rules.