{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Segment",
  "description": "A segment in a structured format.",
  "properties": {
    "fields": {
      "additionalProperties": {
        "type": "string"
      },
      "description": "A mapping from the positional location to the value. The key string uses zero-based indexes separated by dots to identify Fields, components and sub-components. A bracket notation is also used to identify different instances of a repeated field. Regex for key: (\\d+)(\\[\\d+\\])?(.\\d+)?(.\\d+)? Examples of (key, value) pairs: * (0.1, \"hemoglobin\") denotes that the first component of Field 0 has the value \"hemoglobin\". * (1.1.2, \"CBC\") denotes that the second sub-component of the first component of Field 1 has the value \"CBC\". * (1[0].1, \"HbA1c\") denotes that the first component of the first Instance of Field 1, which is repeated, has the value \"HbA1c\".",
      "type": "object"
    },
    "segmentId": {
      "description": "A string that indicates the type of segment. For example, EVN or PID.",
      "type": "string"
    },
    "setId": {
      "description": "Set ID for segments that can be in a set. This can be empty if it's missing or isn't applicable.",
      "type": "string"
    }
  },
  "type": "object"
}