@taxmoore In your situation, Form 8919 is the correct form to file with Reason H. However, Form SS-8 is not required since you received a W-2 from the same employer. It won't hurt to file a Form SS-8, but it might confuse the IRS as it's two separate things. You are okay that the box isn't checked in Column C because Code H already answers that question. That is mostly for reporting income that no W-2 was received from the same employer. You should be good!
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