Which of the following is excluded from the definition of cremated remains?

The definition of cremated remains specifically excludes items that are not considered part of the final product of cremation. Prosthetic or medical devices fall into this category because they are not organic material dissolved or transformed during the cremation process. Instead, these items typically undergo different handling, as they do not become part of the ashes that are eventually returned to the family.

In the context of the other options: lungs, bone fragments, and hair are all components of human remains that can be reduced to ashes through cremation. Bone fragments, in particular, are a significant part of the cremated remains since they comprise what is left after the cremation process. Hair is also included as it typically survives the cremation process in some form. Thus, the accurate identification of what constitutes "cremated remains" hinges on distinguishing between organic decay and non-combusted matter, with prosthetic or medical devices being the clear exclusion in this case.