HIPAA Compliant ERP Development & Software Engineering

Healthcare Compliance Engineering: HIPAA Compliant Custom ERPs

Executive Summary

This is how ERPStack engineers HIPAA compliant ERP systems. As hospitals, telemedicine networks, and pharmaceutical operators scale, the volume of Protected Health Information moving through B2B software grows with them. Legacy systems fail in three predictable ways: access-control leaks, unencrypted PostgreSQL backups, and audit trails that cannot reconstruct who read a record. The architecture below removes all three, on Next.js and TypeScript, deployed by Terraform into your own AWS or Microsoft Azure account.

Technical Safeguards Under 45 CFR § 164.312

The HIPAA Security Rule sets its technical safeguards at 45 CFR § 164.312. Four drive most of the engineering.

Encryption in transit and at rest. TLS 1.3 covers every hop. Sensitive columns — patient name, national identifier, diagnosis code — are encrypted with AES-256 in GCM mode in the application layer before Drizzle ORM writes the row to PostgreSQL. Keys sit in AWS Key Management Service or Microsoft Azure Key Vault on a 90-day rotation. Worth knowing: encryption at rest is an addressable specification under § 164.312(a)(2)(iv), not a required one. We treat it as required, because a stolen backup that yields ciphertext is the difference between an incident and a breach.

Access control. RBAC is evaluated server-side on every query, never in the browser. Clinicians authenticate through OAuth 2.0 or your SSO provider with multi-factor authentication, and sessions end after 15 minutes idle — the § 164.312(a)(2)(iii) automatic logoff specification, which matters most on shared ward terminals.

Unique user identification. § 164.312(a)(2)(i) makes this one required. Every clinician, coordinator, and billing administrator holds a distinct identity in the ERP; shared accounts are blocked at the schema level, and every mutation is signed with the acting identity.

Emergency access. § 164.312(a)(2)(ii) requires a documented emergency procedure. A break-glass path lets an authorised clinician reach a record outside their role and raises an immediate alert carrying the actor, the record, and the justification.

Audit Schema in PostgreSQL

§ 164.312(b) requires mechanisms that record and examine activity in systems containing PHI. Drizzle ORM defines an append-only table:

// Append-only PHI audit table. RBAC grants allow INSERT only;
// UPDATE and DELETE are revoked on this table for every PostgreSQL role.
import { pgTable, serial, text, timestamp, varchar } from 'drizzle-orm/pg-core';

export const phiAuditLog = pgTable('phi_audit_log', {
  id: serial('id').primaryKey(),
  userId: varchar('user_id', { length: 256 }).notNull(),
  action: varchar('action', { length: 64 }).notNull(), // READ | CREATE | UPDATE | DELETE
  recordId: varchar('record_id', { length: 256 }).notNull(),
  // AES-256 ciphertext; keys held in AWS KMS, never in PostgreSQL
  preValue: text('pre_value'),
  postValue: text('post_value'),
  ipAddress: varchar('ip_address', { length: 45 }).notNull(),
  timestamp: timestamp('timestamp', { mode: 'date' }).defaultNow().notNull(),
});

Two properties make that log evidence rather than decoration: UPDATE and DELETE are revoked for every role including the application role, and rows mirror within seconds to AWS object storage under a write-once lock.

Administrative Safeguards and the 60-Day Clock

§ 164.308 administrative safeguards carry the rest. ERPStack signs a Business Associate Agreement before work begins wherever engineers can reach PHI; clinical routes ship noindex headers so no patient-facing ERP dashboard enters a search index; backups age out on your documented retention schedule with tenant keys destroyed on offboarding.

45 CFR § 164.404(b) requires individual notice no later than 60 calendar days after discovery. That is unmanageable if scoping an incident means collecting logs from 4 systems. The ERP alerts on bulk exports, off-hours administrator access, and repeated authorisation failures, and the audit trail answers who, what, and when in one SQL query. ERPStack does not make the notification — your covered entity does.

Operational Outcomes

Sub-200ms encrypted record retrieval through Next.js server components and Redis caching. Filtered access reports exported as PDF for any date range without engineering help. Zero-Trust Security throughout: no implicit network trust, no public PostgreSQL route, every request authorised on its own merits.

Stack and Boundaries

The HIPAA compliant ERP runs on Next.js and TypeScript, with PostgreSQL behind Drizzle ORM, deployed by Terraform into your own AWS or Microsoft Azure account. ERPStack operates none of it: after handover, 0 ERPStack accounts reach your PostgreSQL cluster, your AWS keys, or your PHI.