ipc extension

The Indian Penal Code, applicable elsewhere in India, was not applicable here under Article 370 of the Constitution of India.

Now it has been removed as the Parliament of India has passed the bill to scrap provisions of Article 370 of the Indian Constitution on 5 August 2019.

So the answer to your query is YES, INDIAN PENAL CODE (IPC) 1860, extends to the Entire Country now.