Where do you see 9b? The box 12 code can only be one or two letters. Most employee contributions would be a code D for a 401(k) plan or code AA for a 401(k) Roth, but there can be other types of plans will different letter codes.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
