In April 2014, when the medical insurance system for medical service fees was revised, the required assessment of inpatients' conditions for the addition of inpatient pharmaceutical service fees in long-term care beds was changed from being conducted at 4 weeks after hospitalization to being conducted 8 weeks after hospitalization. However, there have been no reports on the changes this has brought to inpatient pharmaceutical services in long-term care beds. Additionally, there have been no reports comparing the content of inpatient pharmaceutical services during the first 8 weeks with that after 9 weeks. Therefore, we investigated inpatient pharmaceutical services for 58 long-term care beds in Kibikougen Lumiere Hospital over 1 year. The rate of pharmacist interventions for prescription optimization was eventually 60.9% and the number of pharmacist intervention categorized according to subject was a total of 465. In addition, there were no significant differences between the first 8 weeks of hospitalization and after 9 weeks in the content of inpatient pharmaceutical services and in the rates of doctor acceptance of pharmacist interventions. Notably, we estimated that there would be a reduction in the cost of medication of around 515,633 yen per year (8,890 yen per bed) as a result of withdrawal of medication through pharmacist intervention. Therefore, inpatient pharmaceutical services in long-term care beds should be continuously offered for patients staying at the hospital for more than 9 weeks.