Admission
Captures comprehensive details of a patient's admission to a healthcare facility for inpatient care. Tracks admission source, bed assignments, dietary requirements, and special arrangements for resource allocation and care coordination.
Overview
Admission extends Encounter with inpatient-specific details when a patient is admitted for overnight stay. It records how the patient arrived (emergency, transfer, scheduled), where they came from, their bed assignment, dietary requirements, and any special accommodations needed. The Admission entity is paired with Discharge to bookend the inpatient episode.
Key Concepts
Admission Sources
How the patient entered the facility:
| Source | Description |
|---|---|
emergency | Via emergency department |
referral | Referred by another provider |
transfer | Transferred from another facility |
routine | Scheduled/elective admission |
newborn | Born at facility |
Pre-Admission Process
The preAdmissionIdentifier tracks patients through the pre-admission workflow:
- Registration before arrival
- Pre-operative testing
- Insurance verification
- Room/bed reservation
Transfer Tracking
The origin field captures the source facility when patient is transferred:
- Hospital-to-hospital transfers
- Nursing home to hospital
- Rehabilitation facility transfers
Bed Management
Bed assignments are tracked at admission:
destination- Initial department/wardroom- Room numberbed- Specific bed identifier
Subsequent moves are tracked via EncounterLocation.
Dietary Requirements
The dietPreferences array links to HealthReferenceDietaryRegime:
- Medical diets (diabetic, cardiac, renal)
- Allergy-based restrictions
- Religious/cultural preferences
- NPO for surgery
Special Arrangements
The specialArrangement array captures accommodation needs:
- Wheelchair accessibility
- Interpreter services
- Oxygen support
- Cardiac monitoring
- Isolation precautions
Readmission Tracking
The reAdmission flag indicates if this is a return admission:
- Important for quality metrics
- May trigger different clinical pathways
- Affects reimbursement
Use Cases
Emergency Admission
When admitting from ED:
- Create admission with
admitSource: "emergency" - Link to originating ED encounter via
partOf - Assign initial bed and department
- Document admitting practitioner
- Set dietary and special needs
Scheduled Admission
For planned procedures:
- Use
preAdmissionIdentifierfrom registration - Set
admitSource: "routine" - Assign reserved bed
- Apply pre-operative diet (often NPO)
- Document expected special arrangements
Transfer Admission
When receiving from another facility:
- Set
admitSource: "transfer" - Record
originfacility - Review and apply transfer documentation
- Continue or adjust dietary orders
- Document handoff details
Bed Assignment
When assigning patient to bed:
- Select appropriate department based on diagnosis
- Check bed availability
- Assign room and bed
- Create initial EncounterLocation record
- Update bed management system
Dietary Setup
When establishing meal service:
- Review patient allergies from record
- Apply condition-based diets
- Note religious/cultural preferences
- Set NPO if pre-surgical
- Alert kitchen services
Related Entities
| Entity | Relationship | Description |
|---|---|---|
| Encounter | Belongs to | Parent inpatient encounter |
| Facility | References | Origin facility if transferred |
| FacilityDepartment | References | Destination department/ward |
| Practitioner | References | Admitting provider |
| HealthReferenceDietaryRegime | References many | Dietary requirements |
| Discharge | Paired with | Concludes the admission |
Calculated Fields
| Field | Type | Description |
|---|---|---|
lengthOfStay | number | Days since admission (to current date or discharge) |
Enums
admitSource
| Value | Description |
|---|---|
emergency | Patient admitted through emergency department |
referral | Patient referred by another healthcare provider |
transfer | Patient transferred from another healthcare facility |
routine | Scheduled or elective admission |
newborn | Infant born at this facility |
other | Other admission source |
Properties
| Property | Type | Mode | Description | Required |
|---|---|---|---|---|
| encounter | Encounter | stored | Reference to the parent encounter this admission belongs to | Required |
| preAdmissionIdentifier | string | stored | Unique identifier assigned during pre-admission registration process Example: | Optional |
| origin | Facility | stored | Healthcare facility or location where the patient was transferred from prior to this admission | Optional |
| admitSource | string | stored | Method or pathway through which the patient was admitted to the facility Values: Example: | Required |
| reAdmission | boolean | stored | Indicates whether this admission represents a readmission within a clinically significant timeframe | Optional |
| admitDateTime | DateTime | stored | Date and time when the patient was officially admitted to inpatient status Example: | Required |
| dietPreferences | HealthReferenceDietaryRegime[] | stored | List of dietary regimes, restrictions, or preferences required for meal planning during hospitalization Example: | Optional |
| specialArrangement | string[] | stored | Special accommodations, equipment, or services required for patient care and comfort Example: | Optional |
| destination | FacilityDepartment | stored | Initial department, ward, or unit where the patient was assigned upon admission | Optional |
| bed | string | stored | Specific bed identifier or number assigned to the patient Example: | Optional |
| room | string | stored | Room number or identifier where the patient is accommodated Example: | Optional |
| admittingPractitioner | Practitioner | stored | Healthcare provider who authorized and processed the patient's admission | Optional |
| lengthOfStay | number | calculated | Calculated number of days since admission date (computed from admitDateTime to current date or discharge date) Example: | Optional |
Examples
Example 1
{
"@type": "Admission",
"encounter": {
"@type": "Encounter",
"identifier": "ENC-2024-789456"
},
"admitSource": "emergency",
"reAdmission": false,
"admitDateTime": "2024-11-29T22:15:00Z",
"dietPreferences": [
{
"@type": "HealthReferenceDietaryRegime",
"code": "CARDIAC",
"label": "Cardiac Diet",
"category": "medical",
"description": "Low fat, low cholesterol diet for heart conditions"
}
],
"specialArrangement": [
"oxygen-support",
"cardiac-monitor"
],
"destination": {
"@type": "FacilityDepartment",
"facility": {
"@type": "Facility",
"name": "City General Hospital"
},
"type": {
"@type": "HealthReferenceDepartmentType",
"code": "ICU",
"label": "Intensive Care Unit",
"category": "critical-care"
},
"name": "Cardiac ICU",
"status": "active"
},
"bed": "ICU-08A",
"room": "108",
"admittingPractitioner": {
"@type": "Practitioner",
"givenName": "Michael",
"familyName": "Chen",
"licenseNumber": "MD-MA-567890"
}
}Example 2
{
"@type": "Admission",
"encounter": {
"@type": "Encounter",
"identifier": "ENC-2024-790123"
},
"preAdmissionIdentifier": "PRE-2024-001567",
"admitSource": "routine",
"reAdmission": false,
"admitDateTime": "2024-11-30T07:00:00Z",
"dietPreferences": [
{
"@type": "HealthReferenceDietaryRegime",
"code": "NPO",
"label": "Nothing by Mouth",
"category": "medical",
"description": "No food or drink, typically before surgery"
}
],
"specialArrangement": [
"wheelchair-accessible"
],
"destination": {
"@type": "FacilityDepartment",
"facility": {
"@type": "Facility",
"name": "St. Mary's Medical Center"
},
"type": {
"@type": "HealthReferenceDepartmentType",
"code": "SURGERY",
"label": "Surgery",
"category": "surgical"
},
"name": "Pre-Operative Ward",
"status": "active"
},
"bed": "PRE-OP-22",
"room": "220",
"admittingPractitioner": {
"@type": "Practitioner",
"givenName": "Sarah",
"familyName": "Thompson",
"licenseNumber": "MD-CA-123456"
}
}Example 3
{
"@type": "Admission",
"encounter": {
"@type": "Encounter",
"identifier": "ENC-2024-790234"
},
"origin": {
"@type": "Facility",
"name": "County Community Hospital",
"facilityType": "hospital"
},
"admitSource": "transfer",
"reAdmission": false,
"admitDateTime": "2024-11-28T16:45:00Z",
"dietPreferences": [
{
"@type": "HealthReferenceDietaryRegime",
"code": "RENAL",
"label": "Renal Diet",
"category": "medical",
"description": "Restricted protein, sodium, potassium and phosphorus for kidney disease"
},
{
"@type": "HealthReferenceDietaryRegime",
"code": "DIABETIC",
"label": "Diabetic Diet",
"category": "medical",
"description": "Low sugar and controlled carbohydrate diet"
}
],
"specialArrangement": [
"dialysis-access",
"spanish-interpreter",
"wheelchair-accessible"
],
"destination": {
"@type": "FacilityDepartment",
"facility": {
"@type": "Facility",
"name": "Metro Regional Medical Center"
},
"type": {
"@type": "HealthReferenceDepartmentType",
"code": "NEPHRO",
"label": "Nephrology",
"category": "medical"
},
"name": "Nephrology Ward",
"status": "active"
},
"bed": "NEPH-15C",
"room": "315",
"admittingPractitioner": {
"@type": "Practitioner",
"givenName": "David",
"familyName": "Rodriguez",
"licenseNumber": "MD-TX-789012"
}
}