Thanks for noting HealthFrame's use of categorized 'symptoms' and 'conditions'. This does present a problem in that it prevents the notation of a valid diagnostic code to be associated to an office visit.
I have not been able to come up with a workaround, which is a legitimate one, to note this. One fix would be to add a link to 'Symptoms' option in the 'Related Information' section of 'Visits' object. Another may be to review if the categorizing methodology being used is correct.
If you have another method (other than just adding it as a text entry) on how to note a Symptom categorized diagnostic code for an office visit, please let me know.