Patient fell and hurt elbow. Provider gives a dx of left traumatic olecranon bursitis. M70.22 is the best I could find.

Now a fellow coder says that we also need to add a ‘unspecified injury’ since the provider said it was a traumatic injury. I would think that the M70.22 tells the whole story here (plus external cause codes). An x-ray was also done and no injury found. So why would I code an ‘unspecified injury’ if I already know that it’s just bursitis?

Am I going nuts? Is she right?