<?xml version="1.0"?><ownershipDocument><schemaVersion>X0101</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-07-02</periodOfReport><issuer><issuerCik>0001027974</issuerCik><issuerName>PACIFICARE HEALTH SYSTEMS INC /DE/</issuerName>        <issuerTradingSymbol>phs</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001209508</rptOwnerCik><rptOwnerName>CALL BRADLEY C</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle></officerTitle><otherText></otherText></reportingOwnerRelationship></reportingOwner><derivativeSecurity><securityTitle><value>Non-Qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>28.85</value></conversionOrExercisePrice><transactionDate><value>2002-07-01</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>5000</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2002-07-01</value><footnoteId id="F1" /></exerciseDate><expirationDate><value>2012-07-12</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>5000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeSecurity><derivativeSecurity><securityTitle><value>Non-Qulaified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>49.33</value></conversionOrExercisePrice><transactionDate><value>2003-06-30</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>5000</value></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-06-30</value><footnoteId id="F1" /></exerciseDate><expirationDate><value>2013-06-30</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>5000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">Represents an annual formula grant of an Option (right to buy) under the Amended and Restated 1996 Non-Employee Directors Stock Plan of PacifiCare Health Systems, Inc., (the "Director Plan") in a transaction exempt under Rule 16b-3. The Option is fully vested and exercisable on the date of grant (6/30/03); however, the underlying shares of PacifiCare common stock acquired upon exercise of the Option may not be sold or transferred within the first six months of the date of grant.  With respect to the 2002 annual formula grant under the Director Plan, a Form 4 covering the Option granted was inadvertently not filed at the time of grant, but such Option is being reported on this Form 4.</footnote></footnotes><ownerSignature><signatureName>s/Bradley C Call</signatureName><signatureDate>2003-07-02</signatureDate></ownerSignature></ownershipDocument>

