Diego Maradona fell and hit his head a week before his death and was left alone for three days after the accident, it has been claimed, according to Daily Mail.
According to local reports, Maradona bumped his head after he fell inside his house. However he was reportedly not taken to hospital or given an MRI scan.
It comes as Diego Maradona's doctor is being probed over medical negligence.
Maradona died of 'acute lung edema and chronic heart failure', according to a preliminary autopsy report, in his sleep at noon while resting at his home in Tigre, Buenos Aires, Argentina, last Wednesday.
The 60-year-old Argentine football legend was receiving round-the-clock medical care at a house in a gated community where he was recuperating from surgery to remove a clot on his brain in early November.
A lawyer for Gisela Madrid, Maradona's nurse, was quoted by Argentine media as saying: 'Maradona fell on the Wednesday of the week before his death.
'He fell and hit his head, but they didn't take him to the hospital for an MRI or CT scan ...'
Following the fall, Maradona was left alone in his room for three days, lawyer Rodolfo Baquè claimed.
'Maradona was unable to decide anything: after the fall he was left alone for three days in his room, without being seen by anyone and without being helped,' he said.
Mr Baquè added that Maradona had hit the right hand side of his head, the opposite one from which he had undergone a blood clot operation on November 11.
On Saturday it emerged Maradona's nurse had admitted she lied about an early-morning check-up.
Initial reports pointed to a 24-year-old nephew who was staying with him at the San Andres home being the last person to see him alive over breakfast the day Diego died.
Maradona was said to have told his relative 'I'm not feeling well' before going back to bed and dying in his sleep before investigators were told he had never got up on Wednesday to eat anything.
Diego's nephew told investigators he last saw him when he went to bed around 11pm on Tuesday. An uneaten late-night sandwich snack was among the items found in his room by police.
A night-shift nurse told investigators he had seen Maradona 'sleeping and breathing normally in bed' around 6.30am on Wednesday.
A report in the hands of state prosecutors heading a probe into the retired footballer's death, leaked to Argentinian media and signed by a nurse named locally as Dahiana Gisela Madrid who took over around the same time, states: 'At 6.30am I started my shift and the patient was resting.
'At 7.30am he is heard moving around inside his room. At 8.30am he continues to rest. At 9.20am he refuses to have his vital signs monitored.'
The health report for private medical firm Medidom is now at the centre of an ongoing probe after the nurse reportedly told investigators she had never entered Diego's bedroom the morning of his death to check up on him.
Local news agency Telam, citing judicial sources in a report widely echoed in the Argentinian press, said the nurse had claimed in her second statement under oath that she had been 'made to lie' for the Medidom report.
'What the witness added in that second statement is that she was made to write in a report for Medidom, where she is part of the nursing team assisting people receiving home medical care, that she had tried to monitor Maradona's vital signs when the reality is that she let him rest,' the report said.
It was not made crystal clear if she was claiming her bosses had obliged her to file the 'false' report amid concerns they would be accused of negligence over Maradona's death, or her hand had been forced by others.
Psychiatrist Susana Cosachov and psychologist Carlos Diaz, who formed part of Maradona's care team, are said to have entered the room just before midday and made several unsuccessful attempts to revive him before calling 999.
Maradona died of 'acute lung edema and chronic heart failure', according to a preliminary autopsy report.
Diego Maradona's doctor is being probed over medical negligence and police are treating the footballer's death as a possible culpable homicide.
Police raided the home of the personal physician Luque on Sunday and investigators are looking into all the medical staff involved with his care.
Luque was at his home while the search on the outskirts of Buenos Aires took place, while Argentinian TV stations have been broadcasting live images of police entering his clinic.
The searches were ordered after Maradona's daughters Dalma and Giannina gave statements yesterday and questioned whether the medication their father was receiving was appropriate.
Argentinian media are reporting Luque could be questioned as an 'imputado', someone who is under official investigation on suspicion of possible mala praxis or negligence.
The physician mounted an emotional defence of his treatment of the soccer legend after the police search of his home.
Luque broke down in tears as he insisted he had done everything possible to assist the retired footballer in his first interview since investigators launched their shock operation to try to establish whether Maradona had been the victim of medical negligence.
Tears rolled down his cheeks as he insisted in a hastily-arranged press conference at his home near Buenos Aires which lasted nearly 40 minutes a 'friend' had died and Diego was his own worst enemy when it came to accepting help from professionals.
He said: 'I was shocked when police turned up at my door. I'm going to co-operate fully.
'I know what I did and what I did was for Diego's benefit until the last moment. I did the best I could.
'I feel terrible because a friend died. I don't blame myself for anything. It's very unfair what's happening.
'I didn't see Diego's daughters a lot but the rest of his family, his siblings and his nephews adore me.
'Someone is trying to find a scapegoat here when I don't see one anywhere.
'We all did the best we could with Diego.'
Insisting Diego had a problem with pills and alcohol, he added: 'He punished himself in a way I wasn't going to allow, not as a doctor but as a friend.
'I don't see good and bad people in all this. We all did what we could. But Diego was the most difficult one of them.
'You couldn't do anything if Diego didn't want it. He hated doctors and psychologists. With me it was different because I was honest with him. He was my friend.
'He should have gone to a centre of rehabilitation when he left hospital but he didn't want to.
'If I'm responsible for anything when it comes to Diego, it was loving him and improving his life.'
Maradona's lawyer Matias Morla last week demanded a top-level probe into the emergency response to the retired footballer's death.
Morla said the first ambulance took more than half an hour to reach the rented house north of Buenos Aires where the former Naples and Barcelona star suffered heart failure.
He called the delay a 'criminal idiocy' and complained Maradona had not received any medical checks in the 12 hours before he died.
It later emerged the first ambulance took 11 minutes to reach the private San Andres gated estate near Buenos Aires Maradona moved to after leaving hospital on November 11 following his brain blood clot operation.