OBJECTIVES Expert consensus recommends follow-up (FU) for patients with pacemakers to be performed twice annually, with implantable cardioverter defibrillators or cardiac resynchronization therapy devices four times annually. Most of the routinely scheduled calendar based FU in-office visits do not require further action but contribute to the consumption of limited health care resources. This model estimates the resource use associated with in-office FU visits in Germany and the United Kingdom (UK). METHODS Own estimates on the number of FU visits were combined with previously published data on frequency and distance of private and public transport. Recently published data on healthcare personnel resource use were considered to model hospital resource use. Data were modeled until 2015. RESULTS If service providers continue the current service model of routine calendar based in-office visits for CIED patients, about 2.23 mio visits will be needed in Germany, and 836’000 in the UK in 2015. More than 87’000 ambulance transports in Germany and 33’000 in the UK will be required for patients attending FU visits. Patients able to use their own transport will drive about 287 mio kilometers in Germany and 28 mio kilometers in the UK. Workload for physicians, nurses and technicians will reach 1.1 mio hours in Germany, and 406’000 hours in the UK, most of them being provided by physicians. These estimates do not yet include unscheduled and emergency services for CIED patients. CONCLUSIONS The increasing number of in-office FU visits will continue to place a heavy burden on primarily cardiology service providers but also on patients. Technologies such as BIOTRONIK’s Home Monitoring can assist hospitals in handling the increasing service demand, free patients from unnecessary travel burden, and ensure adherence to FU