> ## 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>