Rx Coverage Indicator

We are using Codesystem-ex-benefitcategory - FHIR v4.0.1 (hl7.org) for showing :
Medical Coverage Indicator
Dental Coverage Indicator
Vision Coverage Indicator

Which code should be used for 'Rx Coverage Indicator ?

Thanks

You are using an example code system. Suggest you create a local valueset to include these codes plus a codesystem of your own making which provides any missing codes you need.