# Resolve Patient By External ID

> Perform Resolve Patient By External ID through GenHealth.

Source: [https://genhealth.ai/docs/workflows/integrations/gen-health/genhealth_resolve_patient_by_external_identifier](https://genhealth.ai/docs/workflows/integrations/gen-health/genhealth_resolve_patient_by_external_identifier)

Integration: [GenHealth](https://genhealth.ai/docs/workflows/integrations/gen-health.md)

- Handler: `genhealth_resolve_patient_by_external_identifier`

## Inputs

- `external_identifier` — External Identifier (expression, required)
  Required literal value or workflow expression.

## Outputs

- `success` — Success
- `patient_id` — Patient Id
- `external_identifier` — External Identifier
- `patient_name` — Patient Name
- `error` — Error

Output schema completeness: `best_effort_declared`

## Safety

- External effect: `read`
- Confirmation recommended: no
- Retry safe: yes
- Dry run supported: no

## Schemas

These schemas are first-pass authoring guidance. Runtime validation remains authoritative.

### Input schema

```json
{
  "type": "object",
  "required": [
    "external_identifier"
  ],
  "properties": {
    "external_identifier": {
      "description": "Required literal value or workflow expression.",
      "x-workflow-field-type": "expression"
    }
  },
  "additionalProperties": false
}
```

### Output schema

```json
{
  "type": "object",
  "properties": {
    "error": {},
    "success": {},
    "patient_id": {},
    "patient_name": {},
    "external_identifier": {}
  },
  "additionalProperties": true
}
```