# FHIR Resources for Nutrition Assessment and Reassessment

> Nutrition Assessment involves collecting and analyzing data to identify nutrition-related issues.

## Nutrition Assessment Data and Associated FHIR Resources

Several FHIR resources can represent different aspects of the assessment:

| Types of data collected                         | Purpose                                                  | Example                       | FHIR Resource                                                         |
| ----------------------------------------------- | -------------------------------------------------------- | ----------------------------- | --------------------------------------------------------------------- |
| Food- and nutrition-related history             | Capture dietary habits and intake information            | Food diary entries            | **Observation NutritionOrderNutritionProduct\*\*\*\*NutritionIntake** |
| Anthropometric measurements                     | Record physical measurements such as weight, height, BMI | Weight: 70 kg, Height: 170 cm | **Observation**                                                       |
| Tests                                           | Document laboratory or diagnostic tests                  | Blood glucose levels          | **Observation**                                                       |
| Test results                                    | Record results of tests                                  | Hemoglobin A1c: 5.5%          | **Observation**                                                       |
| Nutrition-focused physical examination findings | Detailed findings from a nutrition-focused physical exam | Skin condition, hair texture  | **Observation\*\*\*\*Condition**                                      |
| Patient history                                 | Capture medical history                                  | Chronic conditions, surgeries | **Observation**                                                       |

## Example

{% code overflow="wrap" %}

```json
Nutrition Assessment
[code]
{
"resourceType": "Observation",
"id": "observation-weight",
"status": "final",
"category": [
{
"coding": [
{
"system": "http://terminology.hl7.org/CodeSystem/observation-category",
"code": "vital-signs",
"display": "Vital Signs"
}
]
}
],
"code": {
"coding": [
{
"system": "http://snomed.info/sct",
"code": "27113001",
"display": "Body weight (observable entity)"
}
],
"text": "Body Weight"
},
"subject": {
"reference": "Patient/example"
},
"valueQuantity": {
"value": 70,
"unit": "kg",
"system": "http://unitsofmeasure.org",
"code": "kg"
}
}
[/code]
```

{% endcode %}

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