> ## Documentation Index
> Fetch the complete documentation index at: https://help.elationhealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Next of Kin (NK1)

An NK1 segment will only be sent if:

1. The patient's age is less than 18 and
2. A next-of-kin exists in Elation

Only 1 NK1 segment may be sent per message.

| seq | type | opt | description                | value |
| --- | ---- | --- | -------------------------- | ----- |
| 2.1 |      | O   | Next of Kin Last Name      |       |
| 2.2 |      | O   | Next of Kin First Name     |       |
| 2.3 |      | O   | Next of Kin Middle Name    |       |
| 4.1 |      | O   | Next of Kin Address Line 1 |       |
| 4.2 |      | O   | Next of Kin Address Line 2 |       |
| 4.3 |      | O   | Next of Kin City           |       |
| 4.4 |      | O   | Next of Kin State          |       |
| 4.5 |      | O   | Next of Kin Zip Code       |       |
| 5   |      | O   | Next of Kin Phone          |       |

<CodeGroup>
  ```text text theme={null}
  NK1|1|NKLAST^NKFIRST^||101 CENTRAL PIKE^^NKCITY^TN^333334444|8881112222
  ```
</CodeGroup>