# WIA-MED-004 Telemedicine Standard v1.0.0

**📱 Healthcare Without Borders**

## Abstract

The WIA-MED-004 Telemedicine Standard defines global protocols for remote healthcare delivery including video consultations, remote diagnosis, electronic prescriptions, patient data exchange, and emergency telehealth. This standard ensures interoperability, security, privacy compliance (HIPAA/GDPR), and cross-border telemedicine capabilities.

## Philosophy

**弘益人間 (Hongik Ingan)** - Benefit All Humanity

Telemedicine should transcend geographical, linguistic, and economic barriers to provide quality healthcare to everyone, everywhere.

## 1. Scope

This standard covers:

- **Video Consultation Protocols**: WebRTC-based real-time communication
- **Remote Diagnosis**: Medical imaging (DICOM), biosignals, AI-assisted diagnosis
- **Patient Data Exchange**: HL7 FHIR interoperability
- **Electronic Prescriptions**: e-Prescription issuance, drug interaction checks, pharmacy integration
- **Healthcare Provider Verification**: License validation, credential verification
- **Privacy & Compliance**: HIPAA, GDPR, data encryption
- **Cross-Border Telemedicine**: International regulations, multi-language support
- **Emergency Telehealth**: 24/7 urgent care, tele-ICU, telestroke

## 2. Architecture

### 2.1 System Components

```
┌─────────────────────────────────────────────────────────┐
│                   Telemedicine Platform                 │
├─────────────────────────────────────────────────────────┤
│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐ │
│  │   Video      │  │   Remote     │  │   Data       │ │
│  │ Consultation │  │  Diagnosis   │  │  Exchange    │ │
│  │  (WebRTC)    │  │ (DICOM/FHIR) │  │    (FHIR)    │ │
│  └──────────────┘  └──────────────┘  └──────────────┘ │
│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐ │
│  │ e-Prescription│  │  Provider    │  │  Security    │ │
│  │   System     │  │Verification  │  │ (HIPAA/GDPR) │ │
│  └──────────────┘  └──────────────┘  └──────────────┘ │
├─────────────────────────────────────────────────────────┤
│           Integration Layer (APIs, Webhooks)            │
├─────────────────────────────────────────────────────────┤
│  EMR Systems │ Pharmacies │ Labs │ Imaging Centers     │
└─────────────────────────────────────────────────────────┘
```

## 3. Video Consultation Protocol

### 3.1 WebRTC Requirements

- **Protocol**: WebRTC with DTLS/SRTP encryption
- **Codecs**:
  - Video: VP9, H.264
  - Audio: Opus 48kHz
- **Minimum Quality**:
  - General consultation: 720p @ 24fps
  - Dermatology: 1080p @ 30fps
  - Ophthalmology: 4K @ 30fps
- **Bandwidth**: 2-8 Mbps (adaptive)
- **Latency**: < 150ms RTT

### 3.2 Security

- TLS 1.3 for signaling
- SRTP (AES-128-GCM) for media
- End-to-end encryption for sensitive consultations
- Waiting room with authentication

## 4. Remote Diagnosis Standards

### 4.1 Medical Imaging (DICOM)

- Support DICOM Web (WADO-RS, STOW-RS, QIDO-RS)
- Lossless compression for diagnostic images
- Minimum resolution per modality:
  - X-ray: 2048x2048
  - CT: 512x512 per slice
  - MRI: 256x256 per slice
  - Pathology (WSI): 40x magnification (0.25 μm/pixel)

### 4.2 Biosignals (FHIR Observation)

```json
{
  "resourceType": "Observation",
  "status": "final",
  "category": [{"coding": [{"code": "vital-signs"}]}],
  "code": {"coding": [{"system": "http://loinc.org", "code": "85354-9"}]},
  "subject": {"reference": "Patient/123"},
  "effectiveDateTime": "2025-01-15T08:30:00Z",
  "component": [
    {"code": {"coding": [{"code": "8480-6"}]}, "valueQuantity": {"value": 120, "unit": "mmHg"}},
    {"code": {"coding": [{"code": "8462-4"}]}, "valueQuantity": {"value": 80, "unit": "mmHg"}}
  ]
}
```

## 5. Patient Data Exchange (HL7 FHIR R4)

### 5.1 Core Resources

- **Patient**: Demographics, identifiers
- **Practitioner**: Healthcare provider info
- **Encounter**: Consultation session
- **Observation**: Vital signs, lab results
- **Condition**: Diagnoses
- **MedicationRequest**: Prescriptions
- **DiagnosticReport**: Imaging/lab reports
- **Consent**: Patient consent for data sharing

### 5.2 Interoperability

- RESTful API (GET, POST, PUT, DELETE)
- Search parameters for efficient queries
- OAuth 2.0 + SMART on FHIR authentication
- Support for Subscriptions (webhooks)

## 6. Electronic Prescription System

### 6.1 Prescription Data Model (FHIR MedicationRequest)

```json
{
  "resourceType": "MedicationRequest",
  "status": "active",
  "intent": "order",
  "medicationCodeableConcept": {"coding": [{"system": "http://www.nlm.nih.gov/research/umls/rxnorm", "code": "314076", "display": "Aspirin 100mg"}]},
  "subject": {"reference": "Patient/123"},
  "authoredOn": "2025-01-15",
  "requester": {"reference": "Practitioner/456"},
  "dosageInstruction": [{
    "text": "Take 1 tablet once daily after meals",
    "timing": {"repeat": {"frequency": 1, "period": 1, "periodUnit": "d"}},
    "doseAndRate": [{"doseQuantity": {"value": 1, "unit": "tablet"}}]
  }],
  "dispenseRequest": {
    "validityPeriod": {"start": "2025-01-15", "end": "2025-02-14"},
    "quantity": {"value": 30, "unit": "tablet"}
  }
}
```

### 6.2 Drug Interaction Checks

- **Major**: Life-threatening - Block prescription
- **Moderate**: Patient deterioration - Warning
- **Minor**: Minimal impact - Information only

### 6.3 Controlled Substances

- Real-time reporting to government systems
- Prescription monitoring program (PMP) integration
- Duplicate prescription detection

## 7. Healthcare Provider Verification

### 7.1 License Validation

- Real-time API integration with national medical boards
- Verification of:
  - Active license status
  - Specialty certification
  - Malpractice history
  - CME credits
  - DEA number (for controlled substances)

### 7.2 Global Provider Registry

WIA maintains international provider database:
- Basic info (name, DOB, nationality)
- License numbers from all practicing jurisdictions
- Specialties and sub-specialties
- Languages spoken
- Telemedicine certifications
- Patient ratings and reviews

## 8. Privacy & Compliance

### 8.1 HIPAA Compliance (US)

**Technical Safeguards**:
- Access control (unique user IDs, automatic logoff)
- Audit controls (logging all ePHI access)
- Integrity controls (tamper detection)
- Transmission security (TLS 1.3, AES-256)

**Physical Safeguards**:
- Facility access controls
- Workstation security
- Device and media controls

**Administrative Safeguards**:
- Security management process
- Workforce security training
- Emergency access procedures
- Business Associate Agreements (BAA)

### 8.2 GDPR Compliance (EU)

**Data Subject Rights**:
- Right to access (1 month response)
- Right to rectification
- Right to erasure ("right to be forgotten")
- Right to data portability
- Right to object

**Data Protection**:
- Lawful basis for processing (consent, contract, legal obligation)
- Data minimization
- Purpose limitation
- Storage limitation
- Data Protection Impact Assessment (DPIA) for high-risk processing

**Breach Notification**:
- Notify supervisory authority within 72 hours
- Notify data subjects without undue delay for high-risk breaches

### 8.3 Encryption Standards

| Data State | Protocol/Algorithm | Key Size |
|------------|-------------------|----------|
| In Transit | TLS 1.3 | 2048-bit RSA |
| At Rest | AES-256-GCM | 256-bit |
| Database | Transparent Data Encryption (TDE) | 256-bit |
| Backups | AES-256 | 256-bit |

### 8.4 Audit Logging

Log all access to patient data:
- **Who**: User ID, role
- **What**: Patient ID, data type
- **When**: Timestamp (UTC)
- **Where**: IP address, location
- **How**: Action type (read, write, delete)
- **Why**: Purpose (treatment, billing, research)

Retain logs for minimum 7 years.

## 9. Cross-Border Telemedicine

### 9.1 Regulatory Challenges

| Issue | Challenge | WIA-MED-004 Solution |
|-------|-----------|---------------------|
| License | State/country-specific | International telemedicine license framework |
| Prescription | Not recognized abroad | International e-prescription standard |
| Liability | Unclear jurisdiction | International arbitration system |
| Insurance | Limited cross-border coverage | Insurance interoperability protocols |
| Data Transfer | GDPR restrictions | Standard Contractual Clauses (SCC) |

### 9.2 Multi-Language Support

- Real-time medical interpretation (human + AI)
- Medical terminology database in 195+ languages
- Automatic translation of:
  - Symptoms and complaints
  - Diagnoses (mapped to ICD-10)
  - Medications (RxNorm to local formularies)
  - Instructions and consent forms

## 10. Emergency Telehealth

### 10.1 Triage Levels

| Priority | Condition | Response Time | Action |
|----------|-----------|---------------|---------|
| P1 - Critical | Life-threatening | < 5 min | Immediate 911/119, ER transport |
| P2 - Urgent | Severe pain, breathing difficulty | < 15 min | ER visit recommended |
| P3 - Semi-urgent | Fever, minor trauma | < 30 min | Remote treatment or clinic visit |
| P4 - Non-urgent | Chronic disease follow-up | < 2 hours | Schedule regular appointment |

### 10.2 Telestroke Protocol

1. **Symptom onset**: Patient/witness recognizes stroke symptoms (FAST test)
2. **EMS activation**: Call emergency services
3. **In-transit assessment**: Paramedics conduct initial assessment
4. **Hospital notification**: Alert stroke center
5. **CT scan**: Non-contrast CT within 25 minutes of arrival
6. **Image transmission**: DICOM to telestroke hub
7. **Neurologist consultation**: Remote evaluation within 10 minutes
8. **Treatment decision**: tPA administration or thrombectomy
9. **Post-treatment monitoring**: ICU admission and follow-up

### 10.3 Tele-ICU

- Real-time vital signs monitoring (ECG, BP, SpO2, etc.)
- Automated alerts for abnormal values
- 24/7 intensivist oversight of multiple ICUs
- Video rounds with remote specialists
- Decision support and treatment recommendations

## 11. Implementation Roadmap

### Phase 1: Foundation (2025-2026)
- Standard finalization and publication
- Reference implementation release
- HIPAA/GDPR compliance framework
- Pilot programs in major hospitals

### Phase 2: Expansion (2027-2028)
- National healthcare system integration
- Pharmacy network expansion
- Insurance billing integration
- Mobile app release (iOS/Android)

### Phase 3: Globalization (2029-2030)
- International provider network (50+ countries)
- Multi-language support (100+ languages)
- AI diagnosis assistant integration
- Developing world healthcare programs

## 12. API Endpoints

### 12.1 Video Consultation

```
POST /api/v1/consultations
GET /api/v1/consultations/{id}
PATCH /api/v1/consultations/{id}/status
POST /api/v1/consultations/{id}/recording/start
POST /api/v1/consultations/{id}/recording/stop
```

### 12.2 Prescriptions

```
POST /api/v1/prescriptions
GET /api/v1/prescriptions/{id}
POST /api/v1/prescriptions/{id}/drug-interactions
POST /api/v1/prescriptions/{id}/dispense
GET /api/v1/pharmacies/nearby?lat={lat}&lon={lon}
```

### 12.3 Provider Verification

```
GET /api/v1/providers/{id}/license-status
GET /api/v1/providers/{id}/specialties
GET /api/v1/providers/{id}/ratings
POST /api/v1/providers/{id}/verify
```

## 13. Certification

Healthcare organizations can obtain WIA-MED-004 certification:

**Requirements**:
- Full compliance with all mandatory specifications
- Security audit (penetration testing, vulnerability assessment)
- Privacy impact assessment
- Successful pilot with 100+ real patients
- 90%+ patient satisfaction score

**Benefits**:
- WIA certification badge
- Listed in global telemedicine directory
- Insurance eligibility in participating networks
- Cross-border practice permissions

## 14. Governance

**Standards Development**:
- WIA Telemedicine Working Group (open membership)
- Annual review and updates
- Public comment period for major changes
- Backward compatibility guaranteed for 5 years

**Compliance**:
- Self-certification with annual renewal
- Random audits (5% of certified organizations)
- Complaint-driven investigations
- Revocation for serious violations

## 15. License

This standard is published under **MIT License**.

Copyright © 2025 WIA (World Certification Industry Association)

Permission is hereby granted, free of charge, to any person obtaining a copy of this standard and associated documentation files, to deal in the Standard without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Standard, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Standard.

---

**弘益人間 (Hongik Ingan)** - Benefit All Humanity

WIA-MED-004 Telemedicine Standard v1.0.0
Published: January 2025

For more information: https://wiastandards.com/med-004