# `HL7v2.Segment.QPD`
[🔗](https://github.com/Balneario-de-Cofrentes/hl7v2/blob/v3.10.1/lib/hl7v2/segment/qpd.ex#L1)

Query Parameter Definition (QPD) segment -- HL7v2 v2.5.1.

Contains query parameter definitions. Fields beyond 2 are query-specific
and carried as :raw.
3 fields per HL7 v2.5.1 specification (minimum).

# `t`

```elixir
@type t() :: %HL7v2.Segment.QPD{
  extra_fields: term(),
  message_query_name: term(),
  query_tag: term(),
  user_parameters_in_successive_fields: term()
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*