Morris had been hospitalized on life support for months and Commissioner Dermot Shea announced he died Saturday.
"The condolences & prayers of the entire department are with Billy & his loved ones during this difficult time," Shea said.
Morris is considered the highest-ranking NYPD official to die of coronavirus.
Morris was 61, a three-star chief, and oversaw the traffic division and the NYPD's highway patrol.
He was elevated to this command last December when Shea became commissioner and began assembling his team.
MORE CORONAVIRUS COVID-19 COVERAGE
UPDATES
[Ads /]
Grieving the lost: Tri-State residents who have died
New York state
New Jersey
Connecticut
Long Island
[Ads /]
RESOURCES
Where are the testing centers
See how our communities are making a difference
Free educational resources for parents and children
How you can help victims of coronavirus
RELATED INFORMATION
[Ads /]
Share your coronavirus story with Eyewitness News
Stimulus check scams and other coronavirus hoaxes
Coronavirus prevention: how clean are your hands?
Centers for Disease Control and Prevention on coronavirus
Total count of NYC COVID-19 cases based on patient address