Dr. Freen saw this patient, for the first time, and diagnosed her with a bloodstream infection due to a port-a-cath malfunction. The principal diagnosis code is:

a) A41.9 Sepsis, unspecified organism
b) T80.211A Bloodstream infection due to central venous catheter, initial encounter
c) Z98.2 Presence of cerebrospinal fluid drainage device
d) D61.3 Idiopathic aplastic anemia