Teleplan requires a diagnosis code for all bills in order for approval. The Diagnostic codes that you add under the Assessment and Plan section of your encounter, are automatically added to any bills you create within that encounter:
To have this configuration set up within your account, please go to an open (unsigned) Encounter and click the gear icon at the bottom of your screen:
This will open your Encounter settings, were you can turn on the sync feature between your encounter and billing items:
Once you click Save, please refresh your browser to apply these changes.