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Open Healthcare Network

The open operating system for healthcare

OHC Foundation stewards CARE Core, apps, standards, and integrations so governments, hospitals, and implementers can run interoperable health systems without vendor lock-in. CARE is the FHIR-native, open-source EMR from Open Healthcare Network — this wiki is the single source of truth for its concepts, technical references, deployment guides, and playbooks.

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54Concepts

102References

780Model fields

30Guides

7Playbooks

Knowledge components

Concepts54

What is…? — definitions and platform primitives in plain language.

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Flows216

How do I…? — step-by-step tasks for working in CARE.

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References98

How is it built? — module-level technical detail for developers and integrators.

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Guides30

Cross-cutting how-tos: contributing, deployment, and operations.

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Playbooks7

Real-world scenarios: HMIS, palliative care, and facility operations.

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Browse by domain

All docs 416

Clinical 82

Billing 28

Facility 25

Medications 23

Scheduling 18

Supply 46

Definitions 38

Access 32

Platform 26

Contributing 7

Deployment 15

Start here

Patient

The longitudinal anchor — every encounter, observation, and order links back here.

Encounter

A bounded period of care: OP visit, IP admission, emergency attendance.

Observation

Vital signs, lab results, clinical assessments — the measurement primitive.

Organization

The access-control tree: health system → hospital → department → ward.

Register a patient

Step-by-step: from search to a saved record ready for an encounter.

Contributing guide

Run Care locally, understand the stack, submit changes upstream.

Solutions

CARE HMIS

Hospital management workflows for registration, encounters, labs, pharmacy, billing, reports, and patient portal.

TeleICU

Hub-and-spoke critical care workflows with remote rounds, escalation, devices, and video context.

Palliative Care Grid

Home-based care coordination, longitudinal records, tasks, referrals, follow-up, and field workflows.

Care Clinics

Primary care and outpatient workflows for scheduling, prescriptions, investigations, and continuity.

Care Janwar

Animal health workflows built on the same open-core pattern for facilities and field programs.

Standards & architecture

FHIR R5

SNOMED CT

LOINC

UCUM

ICD-10

ABDM

Deploy & operate

Kubernetes reference architecture

Two-node cluster running Care + every supporting service — no cloud dependencies.

Deploying Care

Helm charts, values overlays, and the apply order for a fresh cluster.

Cloud providers

AWS ECS, GCP GKE, DigitalOcean App Platform — pick your target.

Data security

Encryption at rest, in transit, access controls, and audit logging.

Technical reference — live model data

Find any field across all 35 Django models via the ModelField table. Example: all JSONField columns in Care:

Model	Field	Section
Account	total_price_components	Balances & totals
Account	cached_items	Balances & totals
Account	service_period	Status
Account	extensions	Tags & extensions
AllergyIntolerance	code	Substance & coding
AllergyIntolerance	onset	Timing
BaseModels&Conventions	history	EMRBaseModel fields
BaseModels&Conventions	meta	EMRBaseModel fields
ChargeItem	code	Description & status
ChargeItem	override_reason	Pricing
ChargeItem	unit_price_components	Pricing
ChargeItem	total_price_components	Pricing

More...

→ Browse all 500 fields

Playbooks

HMIS playbook

Outpatient registration, encounter queues, and hospital-desk scenarios.

Palliative care playbook

Patient enrollment, home visits, and care grid workflows.

Who it's for

Governments

Funders

Hospitals

Implementation partners

Developers

Clinicians

About the foundation

The OHC Foundation stewards the shared core so health systems can deploy modern software without vendor lock-in:

• Core platform
• Standards
• Quality and security
• Ecosystem
• AI readiness

I had a chance to meet with the Open Healthcare Network, it's fantastic to see what they are doing.

Satya Nadella— CEO, Microsoft

All docs · Cargo tables · Categories · Recent changes

Open Healthcare Network

Foundation

Overview · Governance · About this wiki

Platform

CARE · CARE Core · CARE Apps · Standards & architecture

Solutions

CARE HMIS · TeleICU · Palliative Care Grid · Care Clinics · Care Janwar

Programs

10BedICU

The nonprofit foundation that builds and stewards CARE, an open operating system for healthcare.

The nonprofit foundation that builds and stewards CARE, an open operating system for healthcare.

The stable platform slab of CARE, providing reusable primitives such as patients, facilities, encounters, orders and observations.

Open Healthcare Network's flagship product: an open-source, FHIR-native electronic medical record (EMR) and healthcare operating system.

Fast Healthcare Interoperability Resources — an HL7 standard for exchanging healthcare data. CARE is built on FHIR R5.

Electronic Medical Record — the digital record of a patient's clinical information.

Hospital Management Information System — software covering registration, encounters, labs, pharmacy, billing and reporting.