This code system http://minhealth.gov.bk/core/CodeSystem/PPHTaxSituationCS defines the following codes:

CodeDisplay
U Uncovered
M Mandated
V Voluntary
 <status value="active"/> <date value="2023-03-23T17:00:45-03:00"/> <description value="Codes for PPH Tax Situation Berzerkistan"/> <content value="complete"/> <count value="3"/> <concept> <code value="U"/> <display value="Uncovered"/> </concept> <concept> <code value="M"/> <display value="Mandated"/> </concept> <concept> <code value="V"/> <display value="Voluntary"/> </concept> </CodeSystem>