There are terms for the intervertebral foramina, however, the intervertebral foramen is the opening between every two vertebrae where the nerve roots exit the spine, so that is not correct for epidurals. It is good for foraminal blocks
Currently there is
Structure of intervertebral space (body structure) SCTID: 47886009 and
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Not really sure what these refer to? Is this referring to the space between the vertebral bodies where the disc lies? It doesn't say between which vertebrae this lays L5-S1? or under L5?
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Whereas in naming the discs they are specific in their synonyms.
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What we need in a second thought is really interspinous spaces.
There are interspinous ligaments for example
but no interspinous space