-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IyavrokqH6eIgu8C/2wWgnX/lqNrzeCoNPYrmR4tgbn538+cnUOBrNDtg5HMSZzg
 A8cuKQ07MjcUeLYKB3zGpg==

<SEC-DOCUMENT>0001200375-10-000002.txt : 20100511
<SEC-HEADER>0001200375-10-000002.hdr.sgml : 20100511
<ACCEPTANCE-DATETIME>20100511190358
ACCESSION NUMBER:		0001200375-10-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100507
FILED AS OF DATE:		20100511
DATE AS OF CHANGE:		20100511

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Panigrahi Dipak
		CENTRAL INDEX KEY:			0001490883

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17082
		FILM NUMBER:		10822273

	MAIL ADDRESS:	
		STREET 1:		C/O QLT INC.
		STREET 2:		887 GREAT NORTHERN WAY, SUITE 101
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V5T 4T5

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QLT INC/BC
		CENTRAL INDEX KEY:			0000827809
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		887 GREAT NORTHERN WAY
		STREET 2:		-
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V5T 4T5
		BUSINESS PHONE:		6047077000

	MAIL ADDRESS:	
		STREET 1:		887 GREAT NORTHERN WAY
		CITY:			VANCOUVER
		STATE:			A1
		ZIP:			V5T 4T5

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	QLT PHOTO THERAPEUTICS INC
		DATE OF NAME CHANGE:	19960618

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	QUADRA LOGIC TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19941201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-05-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000827809</issuerCik>
        <issuerName>QLT INC/BC</issuerName>
        <issuerTradingSymbol>QLTI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001490883</rptOwnerCik>
            <rptOwnerName>Panigrahi Dipak</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O QLT INC.</rptOwnerStreet1>
            <rptOwnerStreet2>887 GREAT NORTHERN WAY, SUITE 101</rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V5T 4T5</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, R&amp;D and CMO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-05-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.71</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Dori C. Assaly, Attorney-in-Fact for Dipak Panigrahi</signatureName>
        <signatureDate>2010-05-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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