This code system http://terminology.hl7.org/CodeSystem/ICD-9DualCoding defines many codes, but they are not represented here
"
];
fhir:CodeSystem.url [ fhir:value "http://terminology.hl7.org/CodeSystem/ICD-9DualCoding"];
fhir:CodeSystem.identifier [
fhir:index 0;
fhir:Identifier.system [ fhir:value "urn:ietf:rfc:3986" ];
fhir:Identifier.value [ fhir:value "urn:oid:2.16.840.1.113883.6.261" ]
];
fhir:CodeSystem.version [ fhir:value "2.0.0"];
fhir:CodeSystem.name [ fhir:value "ICD9DualCoding"];
fhir:CodeSystem.title [ fhir:value "ICD-9 Dual Coding"];
fhir:CodeSystem.status [ fhir:value "retired"];
fhir:CodeSystem.experimental [ fhir:value "false"^^xsd:boolean];
fhir:CodeSystem.date [ fhir:value "2021-11-09T10:00:00+10:00"^^xsd:dateTime];
fhir:CodeSystem.publisher [ fhir:value "TBD - External Body"];
fhir:CodeSystem.contact [
fhir:index 0;
fhir:ContactDetail.name [ fhir:value "HL7,HL7,HL7,HL7" ]
];
fhir:CodeSystem.description [ fhir:value "ICD-9 Dual Coding Expression Syntax\", description: ICD-9 allows dual coding. Refer to Section ?? of the ICD-9 Instruction Manual (ref?).\r\n\r\nThis OID identifies the code system that describes how to encode Dual Coding in a CD compatible expression (for Datatypes R2 CD only).\r\n\r\nAn ICD-9 dual code expression SHALL consist of two ICD-9 codes separated by space. This code system SHALL NOT be used for single ICD-9 codes; the normal ICD-9 code system oid which is 2.16.840.1.113883.6.3 should be used in this case. DisplayName SHALL not be used.\r\n\r\nDual code expressions SHALL only be used per the rules described in the ICD-9 instruction manual.\r\n\r\n**An example CD:**