---
type: "example"
title: "Substance Example: substance-example-f203-potassium"
resource: "Substance"
example: "substance-example-f203-potassium"
---
# Substance Example: substance-example-f203-potassium

## Example XML



```xml
<?xml version="1.0" encoding="UTF-8"?>
<Substance xmlns="http://hl7.org/fhir" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://hl7.org/fhir ../../schema/substance.xsd">
	<id value="f203"/>
	<identifier>
		<system value="http://acme.org/identifiers/substances"/>
		<value value="1234"/>
	</identifier>
	<instance value="false"/>
	<category>
		<coding>
			<system value="http://terminology.hl7.org/CodeSystem/substance-category"/>
			<code value="chemical"/>
			<display value="Chemical"/>
		</coding>
	</category>
	<code>
		<concept>
			<coding>
				<system value="http://snomed.info/sct"/>
				<code value="88480006"/>
				<display value="Potassium"/>
			</coding>
		</concept>
	</code>
</Substance>
```