# text.div
This code system http://hl7.org/fhir/concept-map-relationship defines the following codes:

Lvl | Code | Display | Definition
1 | related-to | Related To | The concepts are related to each other, but the exact relationship is not known.
2 | equivalent | Equivalent | The definitions of the concepts mean the same thing.
2 | source-is-narrower-than-target | Source Is Narrower Than Target | The source concept is narrower in meaning than the target concept.
2 | source-is-broader-than-target | Source Is Broader Than Target | The source concept is broader in meaning than the target concept.
1 | not-related-to | Not Related To | This is an explicit assertion that the target concept is not related to the source concept.

# concept[].definition
The concepts are related to each other, but the exact relationship is not known.

# concept[].concept[].definition
The definitions of the concepts mean the same thing.

# concept[].concept[].definition
The source concept is narrower in meaning than the target concept.

# concept[].concept[].definition
The source concept is broader in meaning than the target concept.

# concept[].definition
This is an explicit assertion that the target concept is not related to the source concept.