J96.00 (Principal DX) Acute respiratory failure, unspecified whether with hypoxia or hypercapnia
S06.6X6A (Admitting DX) Traumatic subarachnoid hemorrhage with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving, initial encounter
00N.00ZZ (Principle Procedure Code- ICD-10-PCS) Release Brain, Open Approach
What would be the appropriate APR DRG, is it 020-1, 020-2, 020-3 or 020-4 or something else?