PROBLEM TO BE SOLVED: To assist in inputting a comment on medical practice.SOLUTION: A receipt computer file creation method of the present invention includes a computer executing the processes of: referring to a storage unit storing a receipt computer file in which medical practice information for specifying a medical practice and comment specification information for specifying a comment content are correlated; aggregating the total number of medical practice information for each kind of the medical practice and the number of medical practice information stored in correlation with comments; specifying a kind of medical practice for which the number of medical practice information stored in correlation with comments in relation to the total number of medical practice information exceeds a prescribed rate; and displaying a prompt for comment input or setting comment input to an essential input item when the specified kind of medical practice is designated or inputted.SELECTED DRAWING: Figure 14
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