Yes, the Form 8379 Injured Spouse Allocation can be filed electronically with your tax return when you are using Turbo Tax to e-file the return. You must be completing your tax return using the Married Filing Jointly tax status when e-filing.
However, if you have already e-filed your tax return, you'll need to mail the 8379 to the IRS.
Please review the Turbo Tax FAQ on how to file Form 8379:
https://ttlc.intuit.com/replies/3326788
