# `HL7v2.Segment.CM1`
[🔗](https://github.com/Balneario-de-Cofrentes/hl7v2/blob/v3.10.1/lib/hl7v2/segment/cm1.ex#L1)

Clinical Study Phase Master (CM1) segment — HL7v2 v2.5.1.

Contains phase-level information for a clinical study.

3 fields per HL7 v2.5.1 specification.

# `t`

```elixir
@type t() :: %HL7v2.Segment.CM1{
  description_of_study_phase: term(),
  extra_fields: term(),
  set_id: term(),
  study_phase_identifier: term()
}
```

---

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