Auto Substitutions

Auto Substitution occurs when an item ordered is not a primary drug, or is currently unavailable for order. In these situations, McKesson will send a primary or secondary generic interchangeable. This avoids ‘manufacturer cannot supply’ (MCS) situations.

There are four types of substitution:

  1. Different pack size is sent than ordered, same DIN.
  2. Primary generic is sent when secondary generic is ordered.
  3. Secondary generic is sent when primary generic is ordered but unavailable.
  4. Primary or secondary generic is sent when non-formulary generic is ordered.

Receiving Auto Substituted Drugs

The Auto-Reconcile Exceptions Report will print each time a purchase order is applied in Nexxsys.

The paper invoices sent with the order will also indicate which drugs were substituted, as well as which drugs were not shipped.

Note: It is important to fully investigate any drugs that aren’t received to ensure that any patients with owe balances or medications on order receive their prescriptions.

Bypassing Auto Substitution

It may be required to order a product that is auto-subbed by McKesson.