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        <link:definition>9955525 - Disclosure - DESCRIPTION OF BUSINESS (Details)</link:definition>
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        <link:definition>9955526 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details)</link:definition>
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        <link:definition>9955527 - Disclosure - REVENUE RECOGNITION - Variable Consideration Provisions (Details)</link:definition>
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  <xs:element id="bhc_AimeeLenarTradingArrangement50OfVestedAndSettledRestrictedStockUnitsMember" abstract="true" name="AimeeLenarTradingArrangement50OfVestedAndSettledRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="bhc_FrankLeeMember" abstract="true" name="FrankLeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
