Bhargavi, NBE doesnt entertain any corrections once the correction window has been closed. And because you have selected the wrong Category and the correction window has been closed long back, you cannot change it to BC-D even in State Counselling. This is because your All India Rank is based on the Category you chose while filling the NEET PG application form and the same Category would be used to prepare State Rank List and State Category Rank list. That way, your name will come in the General Category list before even you can make any changes to your Category. So unfortunately, you miss the chance for appearing in both State and All India Counsellings.