# FHIR Condition
## Introduction to Basic Concepts
### What is FHIR？
* FHIR (Fast Healthcare Interoperability Resources), a standard for facilitating healthcare data exchange and interoperability, provides a flexible, standardised approach to exchanging and sharing healthcare data.
* <font color=red>**FHIR Resources**</font> is <font color=red>**the basic unit**</font> defined in the FHIR standard to describe various healthcare-related entities or information such as patients, physicians, medications, diagnoses, etc.

### What is FHIR Condition？
FHIR condition refers to a patient's medical diagnosis or health problem.

* Conditions can be <font color=red>**a variety of diseases, symptoms, disorders or other medical problems**</font>, such as diabetes, high blood pressure, colds, headaches, etc. They usually contain detailed information about the illness or problem, including the date of diagnosis, severity and who diagnosed it.
* It usually contains detailed information about the condition or problem, including the date of diagnosis, severity, who diagnosed it, etc.

## Architecture
Suppose a patient is diagnosed with Hypertension.

{
  "resourceType": "Condition",
  "id": "example-condition",
  "patient": {
    "reference": "Patient/example-patient"
  },
  "code": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "38341003",
        "display": "Hypertension"
      }
    ],
    "text": "High Blood Pressure"
  },
  "clinicalStatus": "active",
  "verificationStatus": "confirmed",
  "onsetDateTime": "2022-01-20",
  "recordedDate": "2023-01-15",
  "severity": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "6736007",
        "display": "Moderate"
      }
    ],
    "text": "Moderate"
  },
  "asserter": {
    "reference": "Practitioner/example-doctor"
  }
}

* "resourceType" indicates that the resource type is Condition.
* "id" is the unique identifier of the resource.
* "patient" indicates a patient, , refer to the patient resource "Patient/example-patient".
* "code" is the coding information for the condition, using the SNOMED CT code for hypertension.
* "clinicalStatus" indicates that the clinical status is active.
* "verificationStatus" indicates that the diagnosis is confirmed.
* "onsetDateTime" indicates that the date of onset of hypertension is 2022-01-20.
* "severity" indicates that the severity of the condition is moderate.
* "asserter" indicates the medical professional who confirmed the diagnosis, refer to the doctor resource "Practitioner/example-doctor".

## Category
* Clinical diganosis
* PHR: personal health record
* SDOH: social determinants of health
🔗Reference:
– [SDOH condition](https://build.fhir.org/ig/HL7/fhir-sdoh-clinicalcare/StructureDefinition-SDOHCC-Condition.html#usage)
– https://build.fhir.org/ig/HL7/fhir-sdoh-clinicalcare/
– https://confluence.hl7.org/display/GRAV/Terminology+Workstream

## FHIR + PHR / EMR
### FHIR + PHR
PHR (Personal Health Record) is <font color=red>**an electronic record of medical and health information maintained by an individual**</font> that can include information about an individual's medical history, diagnosis, treatment plan, and more.
#### Why apply FHIR Conditioning to PHR?
* **Transmission and interoperability:** Personal health records can interact and be shared with healthcare provider systems.
* **Improving the quality of doctor-patient communication:** This helps patients better manage their health information, easily share it with healthcare providers and receive better care when needed.


### FHIR + EMR
EMR (Electronic Medical Record) is typically deployed and maintained internally by <font color=red>**a healthcare organisation to record and manage a healthcare provider's patient information**</font>, including medical histories, diagnoses, prescriptions, lab results and more.

### Application Scenario
#### Extend Applications
* **Ensure a quiet and comfortable environment:** Ensure that the patient is in a quiet and comfortable environment to minimise irritation and disturbance.
* **Provide an appropriate diet:** Provide an appropriate diet according to symptoms and avoid stimulating foods and drinks.
* **Administer medication:** Give appropriate medication as needed, such as antipyretics, painkillers, etc. Make sure you read the instructions carefully before giving any medication.
* **Monitor symptoms:** Monitor the patient's symptoms and condition regularly. If symptoms worsen or persist, seek medical attention.
* **Provide psychological support:** Provide emotional support and comfort to help the patient through this difficult time.
### Routine Healthcare Process

## Future Prospects
Integration of medical, service and public systems:
- Medical: Provide accurate assessment and disposition recommendations.
- Service: Provide quality services and incentives.
- Citizen: Exercise compliance, physiological and problematic condition response, real-time interaction.

**Summary: The integration of the PHR and EMR is necessary for accurate assessment and recommendations, for the provision of real-time services, and medical interaction.**