Personalized Therapy Study - HFRS (TriageHF) Post Approval Study

Inclusion Criteria: * Patient or legally authorized representative provides written authorization and/or consent per institution and geographical requirements * Patient has or is intended to receive or be treated with an eligible ICD or CRT device or Patients may be enrolled pre-implant and up to 30 days post-implant following confirmation of patient eligibility. * Patient is enrolled in the Medtronic CareLink® Network for remote monitoring. Exclusion Criteria: * Patient who is, or is expected to be inaccessible for follow-up * Patient with exclusion criteria required by local law * Patient is currently enrolled in or plans to enroll in any concurrent drug and/or device study that may confound results.