diff
type: Parameters
node role: treeRoot
id:
  v: diff
parameter:
  name:
    v: operation
  part:
    name:
      v: type
    value: Code
      v: replace
  part:
    name:
      v: path
    value: String
      v: CodeSystem.title
  part:
    name:
      v: previousValue
    value: Markdown
      v: LT processed specimen
  part:
    name:
      v: value
    value: Markdown
      v: LT Lab processed specimen