I agree that you should try calling the hospital to work out a payment plan. Also consider calling SSDI if you are on disability to see if they have assistance. Also call 211 to see if they have assistance or recommendations. You may or may not want to consider taking out a bank loan or credit card to pay for it and then pay off the loan later.
The complicated scenario is if you just didn't pay. I would recommend asking this question ("What happens if you just don't pay?") to a financial forum full of lawyers to get information about that. Remember to include your state in the OP. Depending on your state, there might be different rules for medical debt than for most other debt, and different rules regarding a "time barred debt" which can no longer impact your credit, and different rules regarding collection practices. Some excellent financial forums are:
Bogleheads ? Index page
and
FatWallet Forums - Finance
Good luck!