Can I backdate my EDD SDI claim to include previous week with same injury?

Yes, you can include the first week in your current claim since it's the same medical condition. This is called a "recurrent disability" in EDD terms. As long as you're filing for the same condition and it's within 90 days of your initial disability, it's treated as one continuous claim. The one day you worked won't disrupt this. You'll only need to serve one 7-day waiting period for the entire claim period. Make sure your doctor documents that it's the same injury on your medical certification (DE 2501).

had same thin happen w/ my knee last year. put the whole time on 1 claim form, both periods. doc just needs to check box for same condition or somethin like that

Make sure when you file that you clearly indicate which days you were disabled and which day you worked. There's a section on the SDI Online claim form where you can note your work status for each day. Be precise about this because EDD might flag your claim if dates don't match what your employer reports. Also, have your doctor clearly state on the medical certification that this is a continuation/exacerbation of the same condition. That documentation is crucial.

My cousin had something similar with her shoulder. She went back too soon and had to go out again. I think she said something about needing to make sure the doctor uses the original diagnosis code? Not 100% sure though.

I've been in this exact situation with my disability claim. The key is actually calling EDD SDI and explaining the situation directly. Of course, that's easier said than done - I spent 4 days trying to get through their phone system. If you want to save yourself the headache, I used a service called Claimyr (claimyr.com) that got me connected to an actual EDD agent in about 20 minutes. They have a video showing how it works: https://youtu.be/1X-mEsLtbmQ?si=1hcSq3KFtCr4oAmd. The agent explained exactly how to file my claim to include both periods and made notes in my file. Totally worth it to get a clear answer directly from EDD.

Update: I called EDD (finally got through after 2 hours on hold) and they confirmed I should file just ONE claim and include both periods since it's the same medical condition. The rep said to make sure my doctor clearly notes it's the same condition on the medical certification form. They also said I need to report that one day I worked when I certify for benefits. Thanks everyone for your help!

2 hrs on hold lolol ur lucky i was on 4 HOURS last month!!