The incident took place at Denver Health Medical Center between late March and early April, but it was not reported until a month later, according hospital administrators.
The Denver Police Department investigated the matter, but ultimately found that no crime has been committed and allowed hospital officials to discipline its snooping staffers internally.
According to a police report, between March 31 and April 3, five nurses working at an unspecified medical unit at Denver Health observed the generously endowed male patient while he was still alive but incapacitated, and also after he passed away, as The Denver Channel first reported, citing an anonymous tipster.
To satisfy their curiosity, the medical staff went so far as to open a body bag to ogle the late patient's genitals for their size, and then talked about what they had seen among themselves, as a hospital spokesperson has confirmed to the station.
Another nurse who overheard their exchange felt that it was inappropriate and reported it to her superiors on May 8.
In the wake of an internal investigation sparked by the complaint, five nurses were suspended from their jobs for three weeks.
Four of the nurses have since returned to work. The fifth nurse is no longer employed by the hospital, but she was not fired, according to officials,
After reviewing the complaint, the Denver District Attorney's Office has concluded that there was insufficient evidence to bring criminal charges against the staffers for their inappropriate conduct.
The nurses at the center of the case have not been identified, and neither has the deceased patient.
In an email to DailyMail.com on Wednesday, a spokesperson for Denver Health said the deceased patient's next of kin have been notified of the incident.
'Denver Health is truly sorry this happened,' read the emailed statement. 'This incident it is not an appropriate representation of the high-quality care and compassion our clinical staff strive to provide to our patients.'