# `HL7v2.Type.CWE`
[🔗](https://github.com/Balneario-de-Cofrentes/hl7v2/blob/v3.10.1/lib/hl7v2/type/cwe.ex#L1)

Coded with Exceptions (CWE) -- HL7v2 composite data type.

Replaces CE in v2.5+. Used when multiple coding systems may apply,
the table can be extended locally, or free text may substitute for a code.

9 components:
1. Identifier (ST)
2. Text (ST)
3. Name of Coding System (ID) -- Table 0396
4. Alternate Identifier (ST)
5. Alternate Text (ST)
6. Name of Alternate Coding System (ID) -- Table 0396
7. Coding System Version ID (ST)
8. Alternate Coding System Version ID (ST)
9. Original Text (ST)

If only free text is available, populate component 9 and leave 1-3 empty.

# `t`

```elixir
@type t() :: %HL7v2.Type.CWE{
  alternate_coding_system_version_id: binary() | nil,
  alternate_identifier: binary() | nil,
  alternate_text: binary() | nil,
  coding_system_version_id: binary() | nil,
  identifier: binary() | nil,
  name_of_alternate_coding_system: binary() | nil,
  name_of_coding_system: binary() | nil,
  original_text: binary() | nil,
  text: binary() | nil
}
```

# `encode`

```elixir
@spec encode(t() | nil) :: list()
```

Encodes a CWE to a list of component strings.

## Examples

    iex> HL7v2.Type.CWE.encode(%HL7v2.Type.CWE{identifier: "I48.0", text: "Paroxysmal atrial fibrillation", name_of_coding_system: "I10"})
    ["I48.0", "Paroxysmal atrial fibrillation", "I10"]

    iex> HL7v2.Type.CWE.encode(nil)
    []

# `parse`

```elixir
@spec parse(list()) :: t()
```

Parses a CWE from a list of components.

## Examples

    iex> HL7v2.Type.CWE.parse(["I48.0", "Paroxysmal atrial fibrillation", "I10"])
    %HL7v2.Type.CWE{identifier: "I48.0", text: "Paroxysmal atrial fibrillation", name_of_coding_system: "I10"}

    iex> HL7v2.Type.CWE.parse([])
    %HL7v2.Type.CWE{}

---

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