Thank you for using the UCSC Genome Browser and for inquiring about the versioning information for refGene. You can access the version number by adding a related table to your query.
Start at the Table Browser with the following fields set:
For this example, I'll paste in an identifier, "NM_000454"
For "output file" select the option "selected fields from primary and related tables" and click "get output" to go to the next step.
Under the "Select Fields from hg19.refGene" section, I'll select the "name" and "name2" checkboxes.
Under "Linked Tables," select the checkbox for "hgFixed: gbCdnaInfo"
Now, select the button, "allow selection from checked tables."
Under "hgFixed.gbCdnaInfo fields" you can select "version" and then click "get output."
Example output:
NM_000454 SOD1 4
ACCESSION NM_000454
VERSION NM_000454.4