This is the ValueSet that contains all the codes in Related Claim Relationship Code (https://nrces.in/ndhm/fhir/r4/ValueSet/ndhm-related-claim-relationship-code) and Related Claim Relationship (https://nrces.in/ndhm/fhir/r4/ValueSet/ndhm-related-claim-relationship-code). E.g. what you have to deal with if you get resources containing codes in either of them