{
  "description": "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:**







Where 989.5 is: \\\"Toxic effect of venom\\\" and E905.9 is: \\\"Bite or sting\\\"",
  "_filename": "CodeSystem-ICD-9DualCoding.json",
  "package_name": "hl7.terminology.r4",
  "date": "2019-03-20T00:00:00-04:00",
  "publisher": "TBD - External Body",
  "content": "not-present",
  "name": "ICD9DualCoding",
  "type": null,
  "experimental": "false",
  "resourceType": "CodeSystem",
  "title": "ICD-9 Dual Coding",
  "package_version": "1.0.0",
  "status": "active",
  "id": "63ced4f7-de5d-417e-b794-84c34354aa44",
  "kind": null,
  "url": "http://terminology.hl7.org/CodeSystem/ICD-9DualCoding",
  "identifier": [ {
    "value": "urn:oid:2.16.840.1.113883.6.261",
    "system": "urn:ietf:rfc:3986"
  } ],
  "version": "2.0.0",
  "contact": [ {
    "name": "HL7,HL7,HL7,HL7"
  } ]
}