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:

SourceDescription
emergencyVia emergency department
referralReferred by another provider
transferTransferred from another facility
routineScheduled/elective admission
newbornBorn 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/ward
  • room - Room number
  • bed - 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:

  1. Create admission with admitSource: "emergency"
  2. Link to originating ED encounter via partOf
  3. Assign initial bed and department
  4. Document admitting practitioner
  5. Set dietary and special needs

Scheduled Admission

For planned procedures:

  1. Use preAdmissionIdentifier from registration
  2. Set admitSource: "routine"
  3. Assign reserved bed
  4. Apply pre-operative diet (often NPO)
  5. Document expected special arrangements

Transfer Admission

When receiving from another facility:

  1. Set admitSource: "transfer"
  2. Record origin facility
  3. Review and apply transfer documentation
  4. Continue or adjust dietary orders
  5. Document handoff details

Bed Assignment

When assigning patient to bed:

  1. Select appropriate department based on diagnosis
  2. Check bed availability
  3. Assign room and bed
  4. Create initial EncounterLocation record
  5. Update bed management system

Dietary Setup

When establishing meal service:

  1. Review patient allergies from record
  2. Apply condition-based diets
  3. Note religious/cultural preferences
  4. Set NPO if pre-surgical
  5. Alert kitchen services

Related Entities

EntityRelationshipDescription
EncounterBelongs toParent inpatient encounter
FacilityReferencesOrigin facility if transferred
FacilityDepartmentReferencesDestination department/ward
PractitionerReferencesAdmitting provider
HealthReferenceDietaryRegimeReferences manyDietary requirements
DischargePaired withConcludes the admission

Calculated Fields

FieldTypeDescription
lengthOfStaynumberDays since admission (to current date or discharge)

Enums

admitSource

ValueDescription
emergencyPatient admitted through emergency department
referralPatient referred by another healthcare provider
transferPatient transferred from another healthcare facility
routineScheduled or elective admission
newbornInfant born at this facility
otherOther admission source
13 properties
Schema

Properties

PropertyTypeModeDescriptionRequired
encounterEncounter
stored

Reference to the parent encounter this admission belongs to

Required
preAdmissionIdentifierstring
stored

Unique identifier assigned during pre-admission registration process

Example: "PRE-2024-001234"

Optional
originFacility
stored

Healthcare facility or location where the patient was transferred from prior to this admission

Optional
admitSourcestring
stored

Method or pathway through which the patient was admitted to the facility

Values: emergency, referral, transfer, routine, newborn, other

Example: "emergency"

Required
reAdmissionboolean
stored

Indicates whether this admission represents a readmission within a clinically significant timeframe

Optional
admitDateTimeDateTime
stored

Date and time when the patient was officially admitted to inpatient status

Example: "2024-11-30T14:30:00Z"

Required
dietPreferencesHealthReferenceDietaryRegime[]
stored

List of dietary regimes, restrictions, or preferences required for meal planning during hospitalization

Example: [{"@type":"HealthReferenceDietaryRegime","code":"DIABETIC","label":"Diabetic Diet","category":"medical"}]

Optional
specialArrangementstring[]
stored

Special accommodations, equipment, or services required for patient care and comfort

Example: ["wheelchair-accessible","sign-language-interpreter","oxygen-support"]

Optional
destinationFacilityDepartment
stored

Initial department, ward, or unit where the patient was assigned upon admission

Optional
bedstring
stored

Specific bed identifier or number assigned to the patient

Example: "ICU-12B"

Optional
roomstring
stored

Room number or identifier where the patient is accommodated

Example: "312"

Optional
admittingPractitionerPractitioner
stored

Healthcare provider who authorized and processed the patient's admission

Optional
lengthOfStaynumber
calculated

Calculated number of days since admission date (computed from admitDateTime to current date or discharge date)

Example: 3

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"
  }
}