## MedplumClient.valueSetExpand() method [​](/content/docs/sdk/core.medplumclient.valuesetexpand#medplumclientvaluesetexpand-method/index.html)

Searches a ValueSet resource using the "expand" operation. See: [https://www.hl7.org/fhir/operation-valueset-expand.html](https://www.hl7.org/fhir/operation-valueset-expand.html)

**Signature:**

```typescript
valueSetExpand(params: ValueSetExpandParams, options?: MedplumRequestOptions): ReadablePromise<ValueSet>;
```

## Parameters [​](/content/docs/sdk/core.medplumclient.valuesetexpand#parameters/index.html)

| Parameter | Type | Description |
| --- | --- | --- |
| params | [ValueSetExpandParams](/content/docs/sdk/core.valuesetexpandparams) | The ValueSet expand parameters. |
| options | [MedplumRequestOptions](/content/docs/sdk/core.medplumrequestoptions) | _(Optional)_ Optional fetch options. |

**Returns:**

[ReadablePromise](/content/docs/sdk/core.readablepromise) <ValueSet>

Promise to expanded ValueSet.

- [MedplumClient.valueSetExpand() method](/content/docs/sdk/core.medplumclient.valuesetexpand#medplumclientvaluesetexpand-method/index.html)
- [Parameters](/content/docs/sdk/core.medplumclient.valuesetexpand#parameters/index.html)