In Box 24A, which date should be entered if only one day of service is provided?

In a scenario where only one day of service is provided, it is appropriate to enter a date only in the "From" section of Box 24A. This is because the "From" date indicates the start of the service period; if the service duration is just one day, the "To" date is redundant and would typically be the same as the "From" date. Therefore, using only the "From" date simplistically captures the information needed for that single service day.

Utilizing both the "From" and "To" dates would imply a range that isn't necessary since the service doesn't encompass multiple days. The options referring to the diagnosis date or the provider's license date are unrelated to the timeframe of service delivery and therefore do not apply in this context.