Unfortunately there are codes that offices will use in the chart, expecting there to be a graphic to indicate the code/procedure was performed, that development has not assigned a graphic for on the charting module. The mini implant codes, 6013, is one of these codes that does not have a designated graphic.
I have seen an office use the code 6010 for a mini implant, though this code is not the official mini implant code, and it does give an implant graphic. However, using this code will place it on the ledger and potentially generate a claim for it.
I did speak with the PracticeWorks Escalations product owner and she will put in a change request to development to have this added in a future release of PracticeWorks.