default of financial obligations on the part of the Private Pay Residential Hospice Patient. 12.4 Other Services . Nursing Facility shall bill any Residential Hospice Patient (or the Residential Hospice Patient's third party payor, if any) for (a)Other Nursing Facility Services, (b)Uncovered Items and Services, and (c)care provided by Nursing Facility upon the advance written request of a Residential Hospice Patient which is not reasonable or necessary for palliation or management of terminal illness and not rendered in accordance with the applicable Plan of Care. Hospice shall bear no responsibility, obligation, or other liability to reimburse Nursing Facility for the cost of these services. 12.5 Billing . Within [thirty (30)] days after the provision of Nursing Facility Room and Board Services or Purchased Hospice Services, Nursing Facility shall submit to Hospice all bills issued pursuant to Section 12.1, 12.2 or 12.3 on forms acceptable to Hospice that include information usually provided to third party payors to verify the services and charges reflected in such billings. Hospice shall pay Nursing Facility either [(a)] within sixty (60) days after receipt of each Nursing Facility bill [or (b) if applicable, upon payment by Medicaid to Hospice, whichever is later.] Payment by Hospice in respect of such bills shall be considered final, unless adjustments are requested in writing by Nursing Facility within [thirty (30)] days of receipt of payment. 12.6 Financial Recordkeeping . Nursing Facility will keep accurate books of account and records (the " Financial Records ") at its principal place of business