Should I state my chronic illness as one of the reason I have few Extra curricular activities in my application for Masters Program? This is my First question, so correct me if I am going off topic.

I am an Indian male. My age is 20. I am pursuing my B.Tech Mechanical Engineering from India's premier institute. I am currently moving to my final year. After that, I wish to apply for Masters abroad. I have a good GPA of 9.12/10, and I would rank top 5 in my class. 

I have been suffering from Crohn's disease for the last three years. Due to this illness, my energy is very much limited and I cannot afford to play sports or do any extra curricular activities or join any clubs. As I was filling up my application I have become aware of it. So the question is: "Is it okay if I justify that due to the above illness I could not do any other activities or will it have any negative impact on my application?"
I am aiming for top 10 Universities.

For those of you who don't know what Crohn's disease is, Please read in the following links. https://www.medicinenet.com/crohns_disease/article.htm#crohns_disease_definition_and_facts
https://www.everydayhealth.com/crohns-disease/living-with/staying-energized-with-crohns-disease/
For US universities, extra-curricular activities are considered important for undergraduate admissions.  But this is not the case for graduate admissions - decisions are made primarily based on your academic record, letters of recommendation, research accomplishments if any, and to a lesser extent, GRE scores.  Extra-curricular activities are not a factor, unless they are academically related (e.g. engineering clubs and competitions, outside  projects, etc).  So there's no need to mention those you have done, nor to make excuses for those you haven't.