Search AllergyIntolerance Record

The Search AllergyIntolerance method allows you to retrieve allergy records for a patient using various search parameters. This is useful for reviewing known allergies before prescribing medications, updating patient records, or integrating allergy data into clinical decision support systems.

Endpoint

GET /fhir/R4/AllergyIntolerance

Required Headers

Authorization: Bearer {access_token}    Accept: application/fhir+json

Query Parameters

Parameter	Type	Required	Description
patient	string	Yes	The ID of the patient whose allergies you want to retrieve.
clinicalStatus	string	No	Filters results based on the allergy’s clinical status (e.g., active, inactive).
verificationStatus	string	No	Filters based on whether the allergy is confirmed or refuted.
category	string	No	Filters by allergy category (e.g., medication, food, environment).
recordedDate	date	No	Filters allergies recorded on or after a given date.

Example Request (Java)

import java.net.HttpURLConnection;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class AllergyIntoleranceSearch {
    public static void main(String[] args) throws Exception {
        String apiUrl = "https://api.healthgorilla.com/fhir/R4/AllergyIntolerance?patient=67890&clinicalStatus=active";
        URL url = new URL(apiUrl);
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setRequestMethod("GET");
        conn.setRequestProperty("Authorization", "Bearer your_access_token");
        conn.setRequestProperty("Accept", "application/fhir+json");

        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();
        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();

        System.out.println(response.toString());
    }
}

Example Response

{
  "resourceType": "Bundle",
  "type": "searchset",
  "entry": [
    {
      "resource": {
        "resourceType": "AllergyIntolerance",
        "id": "12345",
        "clinicalStatus": {
          "coding": [{
            "system": "http://terminology.hl7.org/CodeSystem/allergyintolerance-clinical",
            "code": "active",
            "display": "Active"
          }]
        },
        "category": ["medication"],
        "code": {
          "coding": [{
            "system": "http://www.nlm.nih.gov/research/umls/rxnorm",
            "code": "2670",
            "display": "Penicillin"
          }]
        },
        "patient": {
          "reference": "Patient/67890"
        },
        "recordedDate": "2024-02-18T12:00:00Z"
      }
    }
  ]
}

Additional Resources

• FHIR AllergyIntolerance Resource

• Health Gorilla API Reference