Production-grade pharmacy inventory & controlled-substance logging.
A working reference for pharmacy operations, compliance officers, healthcare IT teams, and Python automation engineers building regulated inventory systems. Every pattern here treats compliance as an architectural constraint — not a reporting overlay.
Design event-sourced ledgers, parse NDC codes and EDI 852/846 feeds, validate digital DEA Form 222 submissions, generate immutable audit trails, and operate sync pipelines that survive offline windows without breaking the chain of custody.
Three technical pillars for regulated inventory
Each pillar contains the architecture, Python implementations, and procedural controls required to keep your inventory mathematically reconcilable and forensically traceable.
Core Architecture & DEA Compliance Frameworks
Event-sourced ledgers, cryptographic boundaries, and ingestion pipelines that encode CSA, DSCSA, and HIPAA constraints into your data topology.
Architect the foundationControlled Substance Storage & Handling
Procedural accuracy, dual-control validation, and tamper-evident reconciliation for Schedule II–V workflows under 21 CFR Part 1304.
Lock down handlingData Ingestion & Inventory Sync Workflows
Schema-enforced ingestion, EDI 852/846 parsing, async batch processing, and DLQ routing that keep multi-site inventory mathematically consistent.
Wire up the pipelineWhat you can build from this site
Implementation-ready patterns and reference code spanning ingestion, classification, audit chaining, and emergency response.
NDC-10 ↔ NDC-11 parsing
Strict regex, padding rules, and Pydantic-validated normalization pipelines for canonical NDC handling.
Open the guideSchedule II–V mapping
Classification engines that tag every NDC, lot, and manufacturer record on ingestion and trigger downstream controls.
Open the guideEDI 852 / 846 pipelines
Segment extraction, control-number validation, and reconciliation against purchase orders before ledger commit.
Open the guideDEA Form 222 digital validation
Schema, signature, business-rule, and audit gates that take XML/EDI 222 from ingest to ledger non-repudiation.
Open the guideImmutable audit boundaries
Define which components generate regulatory-grade logs and how Merkle-chained, WORM-stored entries stay tamper-evident.
Open the guideOffline sync & fallback routing
CRDT reconciliation, idempotency keys, and append-only local caches keep DEA chain-of-custody intact during outages.
Open the guideHow the content is organized
Each pillar opens with an executive overview, then drills into specific subsystems with working Python, regulatory mappings, and operational playbooks.