What it is:
Box 11a is where the insured's 8-digit date of birth in the format MMDDYYYY is entered and a box indicating the insured's gender is marked.
Therabill will use the values from the Birthdate and Gender fields that are in the Demographics section of the Insurance Card to build the data for Box 11a.
On the top menu bar, select Clients / Client List. Click the blue pencil for the desired client. Click Add Card or the blue pencil of an existing insurance card. You will now see the Edit Insurance Card form. In the Demographics section, find the fields for Gender and Birthdate. Enter the appropriate values as shown on the Insurance Card.