He made the remarks at the Kuwait International Conference for the Reconstruction of Iraq (KICRI).
The first day of the conference is allocated for Iraq reconstruction programs and worldwide assistance in this regard as well as the development works carried out by the non-governmental organizations in Iraq.
According to Arab News, Iraq needs $22.9bn in the short term and $65.4bn in the medium term for reconstruction and recovery, quoting the Iraqi minister of planning Salman Al-Jumaili on Monday.
Mustafa al-Hiti, the head of Iraq s reconstruction fund, said some work had started but that funds were needed urgently to restore basic infrastructure and services in many provinces.
Iraq declared victory over the jihadists in December, having taken back all the territory captured by the militants in 2014 and 2015.
The government announced 157 projects in January, including airport repairs and oil development, while calling on companies around the world to invest.More news: What to do when Valentine's Day and Lent collide
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In a Monday statement, Qassemi underlined the significance of Iraq as a friend and neighbor of Iran, and said Iranian Foreign Minister Mohammad Javad Zarif will take part in Kuwait conference.
Kuwait's state news agency, KUNA, reported a pledge of providing Iraq with $330 million in humanitarian aid by non-governmental organizations at a parallel NGO conference.
This funding also helps internally displaced people in Iraq return home safely and supports the clearance of explosive remnants of war and improvised explosive devices in areas newly liberated from Daesh, states the release.
"Add to that the total damages in the security sector, which amounted to $14bn and the value of losses on bank assets, about $10bn", he said.
Iraq reopened to foreign investment after 2003, with most spent on increasing its oil and natural gas production.
Iraq has been dogged for decades by violence and instability. The United States, which led the coalition that provided the Iraqi armed forces with crucial air-support in the fight against IS, does not plan on pledging any money at the Kuwait conference, according to American officials.
A US -led invasion toppled Saddam Hussein and was followed by years of insurgency, sectarian bloodletting between Sunnis and Shi'ites, as well as ethnic tensions between the Arabs and Kurds, all before ISIL emerged in 2014.