When using the OHDSI version of Atlas, I was unable to use the vocabulary search function to find ICD source codes that begin with characters (e.g. V72.3 or V81.6). This issue did not change when I used upper- or lower-case characters. I could find these codes by typing the numerical part of the code without the initial character and selecting ICD-9 or ICD-10 in the “Vocabulary” list. This is not an issue in the internal (Janssen) Atlas version.