A client reimburses me for expenses, but includes the expenses in box 7 of my 1099. Seems odd to deduct expenses I have been reimbursed for, but unfair to be taxed on it.

You would include the 1099 as income, and then deduct the expenses incurred.

The net impact would be zero if the costs equal the income.  

Note that this is not an itemized expense.  It's a business expense entered on Schedule C

Great. Thank you very much!

Yes, I agree with you.

Does it make a difference if some of these expenses would not otherwise be 100% deductible? For example, they reimburse 100% of my travel meals.

If you are reimbursed directly for costs incurred by a client, then this would be similar to what is called an accountable plan (you are reporting expense incurred and getting paid back for exact amount).  You should then list these expenses as a Misc deduction (100% of them) and put down client costs reimbursed-accountable plan.

Thanks again. I appreciate it. Not seeing a Misc Deduction space on Schedule C. Did you mean list these under Other Expenses (Part V of Schedule C)?

yes

Great. Thanks for all your help!