# pydicom.datadict.dictionary_VM

`pydicom.datadict.``dictionary_VM`(tag)

  Return the VM of the element corresponding to tag.

  Only performs the lookup for official DICOM elements.

  Parameters: | tag (int) – The tag for the element whose value multiplicity (VM) is being retrieved.
  Returns: | The VM of the corresponding element.
  Return type: | str
  Raises: | `KeyError` – If the tag is not present in the DICOM data dictionary.