( CNN ) The Manhattan clinic that treated comedian Joan Rivers before her death made a number of serious mistakes , including failing to identify deteriorating vital signs , and providing timely intervention , according to a report released Monday . The report , issued by the Centers for Medicare & Medicaid Services ( CMS ) , a federal agency , did not mention Rivers by name , but referred an 81-year-old female , or Patient # 1 . The description of that patient and the procedures she underwent match what 's known about Rivers , including her age and the date of her appointment . CMS declined to say whether the patient referenced in the report is Rivers . The famed 81-year-old entertainer died September 4 , a week after an appointment at Manhattan 's Yorkville Endoscopy clinic . Among the major errors CMS found the clinic committed are : . -- Failing to identify deteriorating vital signs and provide timely intervention ; . -- Failing to record Rivers ' weight , prior to the administration of medication for sedation ; . -- Failing to consistently document the dose of Propofol , a sedative , administered ; . -- Failing to get Rivers ' informed consent for each procedure performed ; . -- Failing to ensure that she was cared for only by physicians granted privilege in accordance with the clinic 's bylaws ; . -- And finally , failing to abide by its own cell phone policy ( the report found that a photograph was taken of a surgeon and Rivers while she was under sedation ) . Yorkville Endoscopy released a statement in response to the report , saying it has been cooperative and already taken steps to correct the situation . `` In response to the statement of deficiencies , Yorkville immediately submitted and implemented a plan of correction that addressed all issues raised . The regulatory agencies are currently reviewing the corrective plan of action and have been in regular contact with Yorkville . `` In addition , the physicians involved in the direct care and treatment referenced in the report no longer practice or provide services at Yorkville , '' it said . Rivers ' appointment at the clinic was on August 28 . Paramedics rushed Rivers from the clinic to New York 's Mount Sinai Hospital a mile away , where she was kept on life support until she died a week later . Her daughter , Melissa , `` is terribly disappointed to learn of the multiple failings on the part of medical personnel and the clinic as evidenced by the CMS report , '' according to a statement from her attorneys . `` As any of us would be , Ms. Rivers is outraged by the misconduct and mismanagement now shown to have occurred before , during and after the procedure , '' it read . The New York medical examiner ruled last month that Rivers died of `` therapeutic complications '' during a procedure to evaluate her `` voice changes '' and stomach reflux . CNN 's Carolyn Sung contributed to this report .
Rivers , 81 , died a week after an appointment at Yorkville Endoscopy clinic . A federal agency says the clinic failed to identify deteriorating vital signs . It also failed to record Rivers ' weight prior to sedating her , the agency reports .