Hello,

According to your question, anyone (whether reported or not reported )in merit list of their respective category, can attend open round counselling with the required document .

OPEN ROUND is the last round to take admission in any of the 7 reputed AIIMS ,after which no counselling will be done. 

For more details, check out- 

https://medicine.careers360.com/articles/aiims-mbbs-eligibility-criteria

Good luck