Nirmitee.io

Custom EHR software development company

Custom EHR Development Services

We build custom EHR software for specialty practices, virtual care companies and health tech vendors: charting, orders and results, e-prescribing, billing and patient access on a record model that is FHIR R4 and US Core ready from the first sprint. When your customers need certified health IT, we engineer to the ONC criteria, including (g)(10), and prepare the test evidence with you.

Scope your custom EHR

For EHR vendors, specialty-care platforms, virtual-first providers and healthcare organizations replacing a legacy or home-grown record. Updated September 26, 2026.

Inside the workflow
One encounter. Every system the record touches.
  1. 01
    Prepare

    Identity, eligibility, history and outside records pulled in before the visit

  2. 02
    Document

    Specialty templates, structured findings and signed notes with addenda

  3. 03
    Order and prescribe

    Lab orders over HL7 or FHIR, e-prescriptions and EPCS through Surescripts

  4. 04
    Bill and share

    837 claims to the clearinghouse, FHIR APIs and SMART apps for patients and partners

Illustrative workflow · scope tailored to your environment

The short answer

What Do Custom EHR Development Services Include?

Custom EHR development builds the clinical record for a specific care setting: charting, orders, results, prescribing, the billing hand-off and patient access. It connects that record to the labs, pharmacies, clearinghouses and health information networks the setting depends on. A US-market EHR also needs FHIR R4 APIs to US Core with SMART App Launch, HIPAA safeguards and, where customers use certified health IT for CMS programs, a planned path through the ONC Health IT Certification Program.

Read our EHR software development guide

Start with the real problem

An EHR Is Judged on the Day a Lab Result Is Corrected, Not the Day of the Demo.

Any team can render a patient summary. The engineering is in what happens next: an ORU arrives that amends a result a clinician already acted on, two users edit the same medication list, a signed note needs an addendum rather than an edit, duplicate patients must be merged without losing history, a controlled-substance prescription needs two-factor signing, and a claim comes back rejected because a rendering provider was missing. We design the record model and the interfaces for those events first, because they decide whether clinicians trust the system.

What we build

Custom EHR Software We Build

Each EHR type carries a different integration and compliance load. We scope it before the first estimate.

Specialty EHRs

Behavioral health, dental, physical therapy, oncology, wound care and other specialties whose workflows a general-purpose EHR handles poorly: scoring instruments, treatment plans, visual charting and outcome measures.

Behavioral health platforms
The engineering insideSpecialty data model, structured templates, outcome measures, 42 CFR Part 2 segmentation for substance use disorder records.

Certification-track EHR modules

Products whose customers report to CMS programs and therefore need ONC-certified health IT for the criteria they use.

Health IT certification readiness
The engineering inside170.315 criteria mapping, (g)(10) FHIR API, USCDI v3 data, audit and security criteria, Inferno test runs before formal testing.

FHIR APIs and SMART app platforms

A standards-based API layer so patients, partner apps and payers can read the record, and so your own apps launch inside it.

FHIR integration services
The engineering insideFHIR R4, US Core 6.1.0, SMART App Launch 2.0 for standalone and EHR launch, Bulk FHIR export, token revocation.

Orders, results and lab integration

Electronic lab orders and results with reference and hospital labs, including the corrections and cancellations that break naive integrations.

Laboratory integration
The engineering insideHL7 v2 ORM and ORU or FHIR ServiceRequest and DiagnosticReport, LOINC mapping, amended-result handling, order status tracking.

E-prescribing and EPCS

New prescriptions, renewals, cancellations, medication history and controlled substances from inside the clinician workflow.

Pharmacy and e-prescribing integration
The engineering insideNCPDP SCRIPT through Surescripts, formulary and benefit checks, EPCS identity proofing and two-factor signing under DEA rules.

Billing and practice management

Charge capture that flows from the signed encounter to a clean claim and back as posted payments and denials.

RCM software development
The engineering insideX12 270/271, 837P and 837I, 999 and 277CA acknowledgements, 835 remittance posting, clearinghouse enrollment.

Your starting point

When a custom EHR is the right build

01

Build a Specialty or Virtual-care EHR

Your care model does not fit a general-purpose EHR, or the EHR is your product. We scope the first care setting end to end, including the interfaces it cannot run without.

The useful outputA bounded clinical scope, record model, integration list and release plan.
02

Replace or Modernize a Legacy EHR

A home-grown or aging record slows every change. We carve out one module at a time, migrate the data behind it and keep clinicians working during the move.

The useful outputA migration boundary, data mapping, coexistence plan and regression-tested modules.
03

Make an Existing EHR Certification Ready

Customers are asking for certified health IT or a (g)(10) API. We map your product against the criteria, close the gaps and run the test tools before you book formal testing.

The useful outputA criteria gap map, a FHIR API to US Core and SMART v2, and Inferno test evidence.

The Engineering Engagement

Custom EHR software development services

Workstreams are selected around your priorities. Each comes with an output your team can inspect, test and own.

01

Clinical workflow and charting

Map intake, documentation, review, sign-off and follow-up with the clinicians who do the work, including interruptions, co-signature and addenda. Prototype the chart before building it.

02

Record model on FHIR R4 and US Core

Model patients, encounters, problems, medications, allergies and observations with source, status and version on every entry. Map to USCDI v3 so the API and exports are not a translation afterthought.

03

Standardized API and SMART launch for (g)(10)

Expose patient and population data through FHIR R4 with SMART App Launch 2.0 for standalone and EHR launch, Bulk FHIR for population export, and an authorization server with scopes and token revocation.

04

Lab, pharmacy, HIE and billing interfaces

Build the interfaces the first care setting depends on: HL7 v2 lab orders and results, NCPDP SCRIPT e-prescribing, CCDA and FHIR exchange with HIEs, and X12 claims through your clearinghouse.

05

Data migration from the current EHR

Extract, map and reconcile demographics, problem lists, medications, allergies, notes, documents and open balances. Run trial loads and clinical spot checks before cutover.

06

Security, audit and HIPAA safeguards

Role-based access, break-the-glass access with review, tamper-evident audit logs, encryption, session controls and BAA-covered hosting, designed with the certification security criteria in view.

07

Certification evidence and release

Map each claimed criterion to features, run the ONC test procedures and Inferno before formal testing, and prepare the documentation the testing lab requests.

Compare your options

Custom EHR Development vs an Off-the-shelf EHR vs an Open-source Base

A custom build is right when the workflow is your product or your advantage. This is how we advise buyers to choose.

Custom EHR buildOff-the-shelf certified EHROpen-source or headless base
Best forA specialty or care model the market serves poorly, or an EHR you sellStandard ambulatory or inpatient care with common workflowsTeams that want a head start on the record and APIs and will own the code
Workflow fitBuilt to your care setting and rolesConfigured within the vendor's templates and roadmapExtended in code, within the base project's data model
ONC certificationEngineered to the criteria you need, then tested and certifiedAlready certified for the vendor's claimed criteriaYour modified product needs its own certification for the criteria you claim
InteroperabilityFHIR, HL7 v2, NCPDP and X12 interfaces built for your counterpartiesVendor interfaces, marketplace apps and interface feesDepends on the base; interfaces are usually yours to build
Data and exitYou own the model, the data and the roadmapExport and API terms set by the vendor contractCode license terms set by the project
Cost shapeBuild cost, then run and improvePer-provider subscription and interface feesBuild and maintenance cost on top of a free core

Many teams combine them: keep a certified EHR for general documentation and build the specialty workflow, patient experience or API layer around it.

Expertise is in the decisions

EHR development decisions that set cost and risk

Decision / 01

Decide the certification scope before the architecture

If customers need certified health IT, list the 170.315 criteria you will claim now. Audit logging, the (g)(10) API, USCDI v3 data and the security criteria shape the data model and authorization server, and are expensive to add later.

Decision / 02

Model the record as versioned clinical events

Keep source, time, author, status and version on every entry. An amended lab result, an entered-in-error medication and a signed note with an addendum are different events, and both the chart and the API must show them correctly.

Decision / 03

Start third-party access in week one

Surescripts certification, the EPCS third-party audit, lab interface slots, clearinghouse enrollment and HIE onboarding each run on someone else's calendar. We open them at kickoff so they do not become the critical path.

A Clear Engagement Also Has Clear Boundaries.

ONC-authorized bodies make certification decisions

We build to the certification criteria and run Inferno and the ONC test procedures before formal testing. An ONC-Authorized Testing Lab tests the product and an ONC-Authorized Certification Body issues the certification.

E-prescribing networks and EPCS have their own reviews

Surescripts certifies connections to its network, and DEA rules require a third-party audit or certification of the EPCS application. We build to those requirements and support each review.

Clinical content is clinically owned

Decision support rules, order sets and medication logic are specified and approved by your clinicians. We build, test and version the approved logic.

Timeline

How Long Custom EHR Development Takes

Dates follow discovery. Scope, the number of interfaces, data migration and certification decide the schedule more than screen count.

01

Discovery and clinical design

Map the care setting, prototype the chart and confirm interface and certification scope.

02

First clinical release

One care setting end to end: scheduling, charting, orders, prescribing and the billing hand-off.

03

Interfaces, migration and certification

Runs alongside the build; third-party onboarding and formal testing often set the pace.

04

Scale and support

More specialties, locations, APIs and ongoing criteria updates.

Delivered work

EHR and Clinical Record Work We Have Delivered

Client names are withheld; each is a real engagement. Our open-source EHR work is public on GitHub.

Open-source Headless EHR on FHIR R4

A headless EHR with a FHIR R4 API and SMART App Launch that passed 47 of 47 ONC (g)(10) SMART App Launch tests in Inferno on 11 June 2026.

EngagementOpen source · Public repository
View the repository on GitHub →

Dental Practice Software

Scheduling, tooth-level charting, treatment plans, insurance billing and double-entry practice accounting in one system for a multi-location group.

EngagementSpecialty EHR · Build and run · Live in production

Offline-first Screening EMR

A clinic record that supports offline capture on powered devices, collects readings from connected instruments and reconciles when network access returns.

EngagementDevice integration · Offline capture and reconciliation

FHIR-native Provider Platform

Scheduling, charts, care plans and billing on a FHIR server with no private database, and single sign-on bridged through OAuth token exchange.

EngagementBuild · Working MVP

Clinician-reviewed AI Documentation Inside an EHR

Recording starts only with consent on record, drafts are grounded in the patient's own chart, and every suggestion is accepted, edited or rejected by the clinician before it reaches the note or a claim.

EngagementAI in the clinical record · Behavioral health · Live in production

Behavioral Health Claims Integration Hardening

Hardened an inherited clearinghouse integration for a behavioral health EHR: claim validation, acknowledgement handling and remittance reconciliation.

EngagementIntegration hardening · United States
Read the engineering case study →

From discussion to delivery

How our custom EHR development projects run

  1. 01

    Discovery

    Care setting, users, interfaces, migration and certification scope, agreed in writing.

  2. 02

    Clinical design

    Chart prototypes reviewed with clinicians; record model and security design signed off.

  3. 03

    Build and integrate

    Working software every two weeks, with interface tests against real message shapes.

  4. 04

    Migrate, test and launch

    Trial data loads, Inferno and criteria test runs, pilot and go-live with a support model.

Start with discovery, a defined build, or a focused modernization.

We agree the scope, dependencies, acceptance criteria and commercial model before implementation. Your existing team can stay involved throughout.

Find the right starting point ↗

Before you commit

Custom EHR development: buyer questions

Explore our integration field guide ↗
How much does custom EHR development cost?

Cost is driven by four things: the number of care settings and user roles, the interfaces (each lab, pharmacy network, clearinghouse and HIE connection is its own workstream), data migration from the current system, and whether you need ONC certification. We give a fixed-scope estimate after discovery, broken down by module and interface, so you can phase scope with the numbers in front of you.

How long does it take to build a custom EHR?

A focused first release for one care setting is planned in months, not years, when scope is bounded. Third-party steps such as Surescripts certification, lab interface slots, clearinghouse enrollment and formal ONC testing run on outside calendars, so we start them at kickoff and plan the schedule around them.

Should we build a custom EHR or buy one?

Buy when your workflows are standard and a certified vendor product fits. Build when the workflow is your product or your advantage, when a specialty is served poorly, or when you need to own the data model and roadmap. A common middle path keeps a certified EHR for general documentation and builds the specialty workflow or API layer around it.

Can you get our EHR ONC certified?

We engineer the product to the 170.315 criteria you plan to claim, run Inferno and the ONC test procedures, and prepare the documentation for testing. An ONC-Authorized Testing Lab then tests the product and an ONC-Authorized Certification Body issues the certification.

What does the (g)(10) standardized API criterion require?

Criterion 170.315(g)(10) requires a FHIR R4 API that serves USCDI data using the US Core implementation guide, SMART App Launch for patient standalone apps and clinician EHR launch, Bulk FHIR export for populations, and published API documentation and terms. Under HTI-1 the baseline moved to USCDI v3, US Core 6.1.0 and SMART App Launch 2.0 from 1 January 2026.

Can our EHR support e-prescribing and EPCS?

Yes. We build NCPDP SCRIPT e-prescribing through Surescripts, including new prescriptions, renewals, cancellations, medication history and formulary checks. For controlled substances we implement identity proofing, two-factor signing and the audit trail that DEA rules require, and support the third-party EPCS audit.

How do you integrate labs with a custom EHR?

We build HL7 v2 ORM and ORU interfaces, or FHIR ServiceRequest and DiagnosticReport where the lab supports them, map results to LOINC, and handle preliminary, final, corrected and cancelled results so the chart always shows the current value and its history.

Can the EHR handle billing and claims?

Yes. Signed encounters produce charges that become X12 837P or 837I claims through your clearinghouse. We process 999 and 277CA acknowledgements, post 835 remittances, run 270/271 eligibility checks and route denials to work queues.

How do you migrate data from our current EHR?

We extract demographics, problems, medications, allergies, results, notes, documents and balances through the vendor's export, database access or FHIR and CCDA, map them to the new model, then run trial loads with reconciliation reports and clinician spot checks before a rehearsed cutover.

Do you build specialty EHRs?

Yes. Specialty EHRs are the most common custom build: behavioral health with 42 CFR Part 2 consent and segmentation, dental with tooth-level charting, physical therapy with plans of care and outcome measures, and oncology, wound care and pediatric workflows.

Is the EHR HIPAA compliant, and do you sign a BAA?

We build the HIPAA Security Rule safeguards into the product: access control, audit controls, integrity, authentication and transmission security, on BAA-covered hosting. We sign BAAs and we are ISO 27001:2022 certified.

Can you extend our existing EHR instead of replacing it?

Yes. We add modules, FHIR APIs, SMART apps and interfaces to existing EHR products, and modernize one module at a time with explicit coexistence and rollback boundaries, so clinicians keep working during the change.

A useful first conversation

Scope your custom EHR.

Tell us what exists today, who uses it and where the workflow breaks. We’ll discuss the scope, access dependencies and the next practical step.

Come with context. Leave with a clearer direction.

A product overview and a de-identified workflow are enough to start. No patient records or credentials are needed.

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Standards and Reference Material

These are independent reference sources, not endorsements. Applicability, platform access and current requirements are confirmed for your project.

ONC Health IT Certification Program ↗ONC certification process ↗Inferno ONC (g)(10) test kit ↗HL7 FHIR R4 ↗US Core 6.1.0 ↗SMART App Launch 2.0 ↗FHIR Bulk Data Access ↗DEA electronic prescriptions for controlled substances ↗