Queensland coroner Terry Ryan will scrutinise if more could have been done to prevent the death, along with the health and medical evacuation services provided.
The inquest is set down for five days from Monday 25 February.
"The inquest into Omid’s death may not achieve all that the family or the broader community may hope," counsel assisting Megan Jarvis told a pre-inquest hearing last October.
Ms Jarvis said his death was not described as "self-immolation" because of uncertainty over whether Mr Masoumali intended to die.
Graphic mobile phone footage captured his verbal protest, the moment he set his petrol-doused clothes on fire and the aftermath when he staggered around badly burned in Nauru’s hospital.
"This is how tired we are. This action will prove how exhausted we are. I cannot take it any more," he can be heard saying on video before being engulfed by flames.
Mr Masoumali and his fiancee arrived by boat on 13 September 2013, and were sent to Nauru.
The Iranian couple were then granted refugee status in December 2014.
'Lessons can be learnt'
"A young man lost hope, he lost a chance for a better future and ultimately, he lost his life and a young woman lost her partner," said Human Rights Law Centre’s Katie Robertson, who is representing Mr Masoumali’s partner identified as ‘MO’ by the court.
"Nothing can change the past. But lessons can be learnt. Changes can and must be made."
Mr Masoumali was taken to Nauru’s hospital at about 10am on April 26 but the plane did not arrive to medevac him to a specialist burns unit in Brisbane until the next morning.
He was admitted to the Royal Brisbane and Women’s Hospital at about 3pm on April 27.
"What we know is that quick evacuation is extremely important when dealing with patients with serious and complex injuries, like those sustained by Omid," said the law firm representing Mr Masoumali’s partner, Maurice Blackburn Lawyers.
"It is therefore vitally important that the medical evacuation process works properly."
An autopsy found he suffered burns to almost two-thirds of his body, had a hypoxic-ischaemic brain injury due to lack of oxygen and all his limbs exhibited severe tissue damage.
Detained by the Department of Immigration and Border Protection, Mr Masoumali’s case is classified as a "death in custody" under Queensland law, requiring a mandatory inquest.
He is one of 12 men to die since offshore processing resumed on Manus and Nauru in 2012.