Completely agree. The newest version of the coding handbook my group uses indicates the same thing:
Report 88307 once per each node group that’s individually identified and diagnosed;
for example, if nodes from both sides of the neck come to the lab in separate containers, post
88307 two times. Alternatively, report 88307 multiple times if the surgeon orients the overall
dissection in such a way that the pathologist is able to report individually on the nodes at
each level. (It’s conceivable that the surgeon might split a regional node group into sublevels
and submit each as an individual specimen; for example, the level II nodes might come
to the lab in vials A and B. In that instance you’d code separately for levels II-A and II-B,
assuming each is individually diagnosed by the pathologist.)
You can also add an additional code for separate structures, like submandibular gland, SCM muscle and mandible if they are included and you mention them specifically in your final diagnosis.