Healthcare and Pharmaceutical integration

McKesson EDI integration for suppliers

A guide for manufacturers and suppliers connecting with McKesson, covering order-to-cash documents, inventory and sales data, and ERP integration.

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Overview

Understanding McKesson integration

Who this is for: Pharmaceutical manufacturers, medical-surgical suppliers and consumer health brands supplying McKesson distribution centers.

McKesson is one of the largest healthcare distributors in North America, and it exchanges orders and shipment information electronically with the manufacturers and suppliers that stock its distribution centers. The core flow for a supplier is familiar from other industries: McKesson sends purchase orders, the supplier acknowledges them, ships with an advance ship notice, and invoices electronically. Sources also list inventory and product activity documents for some programs.

Healthcare distribution adds requirements of its own. Product data such as lot numbers and expiration dates matters for receiving and traceability, and pharmaceutical supply chains in the United States carry serialization and traceability obligations under federal law. Many pharmaceutical manufacturers also exchange sales and chargeback data with wholesale distributors to support contract pricing, using industry documents designed for that purpose.

Third-party sources disagree on the exact documents McKesson requires, which typically vary by program and product type. Suppliers should confirm the document set, identifiers and connection details with McKesson's B2B and EDI team.

Workflows

Typical McKesson business workflows

Supplier order-to-cash

1Receive 850 purchase order
2Send 855 acknowledgment
3Ship with lot and expiry data
4Send 856 ship notice
5Send 810 invoice

Documents and APIs

Common McKesson transactions

Documents commonly exchanged with McKesson, based on the public sources listed below. Exact requirements depend on your program, so always confirm against McKesson's current implementation guide.

Document	Name	Direction	Purpose
850	Purchase Order	From McKesson	McKesson orders products for its distribution centers.
855	Purchase Order Acknowledgment	To McKesson	The supplier confirms or adjusts the order.
856	Advance Ship Notice	To McKesson	Describes shipment contents including product details.
810	Invoice	To McKesson	Bills McKesson for shipped products.
846	Inventory Inquiry/Advice	Both directions	Shares inventory availability where enabled.
852	Product Activity Data	From McKesson	Shares product movement and inventory data where provided.

Connectivity

How companies connect

Direct EDI connection
Suppliers can connect to McKesson directly using connection details provided by its B2B and EDI team.
EDI service provider
Many suppliers exchange documents through an EDI provider that manages the McKesson connection.

Challenges

Common integration challenges

Product data accuracy
Lot, expiration and product identifiers must be correct for receiving and traceability.
Program-specific requirements
Document sets vary by program, so requirements must be confirmed with McKesson.
Contract pricing data
Sales and chargeback data exchanged across the pharmaceutical supply chain must reconcile with contracts.

How ECOM helps

How ECOM can support your McKesson integration

Industry

Pharmaceuticals

See how ECOM supports pharmaceutical distribution EDI.

Solution

EDI Integration

Integrate McKesson orders, ship notices and invoices with your ERP.

Product

PRISM-SCV

Monitor McKesson acknowledgments, ship notices and invoice exceptions.

ERP integration options

ECOM integrates McKesson documents with ERP and warehouse systems so lot and expiry data flows from shipping into ship notices, and orders and invoices post without re-keying.

Visibility and exception management

PRISM-SCV, ECOM's supply chain visibility product, is designed to follow each McKesson document from receipt to response and flag late or missing documents and mismatches, so your team can resolve exceptions before they affect the relationship.

Explore PRISM-SCV

McKesson integration FAQs

Which EDI documents does McKesson use with suppliers?

Commonly cited documents include the 850 purchase order, 855 acknowledgment, 856 ship notice and 810 invoice, with inventory and product activity documents for some programs. Confirm the set with McKesson's B2B and EDI team.

Why do lot and expiration dates matter in McKesson ship notices?

They support accurate receiving, inventory rotation and product traceability, which are critical in healthcare distribution.

Can ECOM support pharmaceutical serialization data?

ECOM can integrate serialization and traceability data flows with your systems and partners. Scope and compliance responsibilities are defined with your team.

Is ECOM a McKesson partner?

This page is an integration guide and does not indicate a partnership with McKesson. ECOM builds integrations to published requirements.

Sources and accuracy

This guide summarizes publicly available information as of October 2026. McKesson sets its own requirements and can change them at any time; your McKesson implementation guide, supplier portal or account contact is the authoritative source for your program.