This code system https://fhir.hl7.org.uk/CodeSystem/UKCore-FundingCategory defines the following codes:

LvlCodeDisplay
1publicPublic
2  nhs-englandNHS England
2  nhs-scotlandNHS Scotland
2  nhs-walesNHS Wales
2  hsc-northern-irelandHSC Northern Ireland
2  jerseyJersey
2  guernseyGuernsey
2  isle-of-manIsle of Man
2  overseas-visitorOverseas Visitor
1privatePrivate