Camera Raw is a plug-in that is hosted by another application like Photoshop, or Elements, or After Effects. Each version of CR can only be hosted by one version-series of those applications. For example, you can upgrade CR several times for the year that PSE13 is current, but once PSE14 is released, then only PSE14 gets new upgrades to CR.
Here is a webpage that shows what versions of what software can host what versions of the CR plug-in:
Is it possible to up grade Camera Raw without updating the PS Elements ( I have PSE 9)
Yes, but Elements 9 is only compatible with Camera Raw up to version 6.5.
If your camera requires a later version of Camera Raw then you have a couple of choices: