Joan Rivers' daughter is suing the New York clinic where she suffered brain damage and died after a routine procedure.
Melissa Rivers is also suing the doctors who treated her mother before her death. In a statement she said she is filing the lawsuit so that no other family had to go through what she did.
Comedian Joan Rivers died last September aged 81 of brain damage due to lack of oxygen after she stopped breathing during an endoscopy days earlier.
The federal Centres for Medicare and Medicaid Services cited the clinic for failing to identify deteriorating vital signs and provide timely intervention.
Yorkville Endoscopy did not immediately respond to a request for comment. The clinic could lose its Medicare accreditation.