From what I have read (Medlearn/Zhealth), day one treatment (37211or 37212) includes all subsequent follow-up angiography performed on the same date of service.
Day two would be coded 37213 or 37214 depending on whether or not the therapy was stopped. All follow-up angiography is included with these codes as well. In short, 75898 no longer applies to thrombolysis.
HTH