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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001209191-08-038045.txt : 20080619
<SEC-HEADER>0001209191-08-038045.hdr.sgml : 20080619
<ACCEPTANCE-DATETIME>20080619164400
ACCESSION NUMBER:		0001209191-08-038045
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080617
FILED AS OF DATE:		20080619
DATE AS OF CHANGE:		20080619

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HealthSpring, Inc.
		CENTRAL INDEX KEY:			0001339553
		STANDARD INDUSTRIAL CLASSIFICATION:	HOSPITAL & MEDICAL SERVICE PLANS [6324]
		IRS NUMBER:				201821898
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		44 VANTAGE WAY, SUITE 300
		CITY:			NASHVILLE
		STATE:			TN
		ZIP:			37228
		BUSINESS PHONE:		615-291-7000

	MAIL ADDRESS:	
		STREET 1:		44 VANTAGE WAY, SUITE 300
		CITY:			NASHVILLE
		STATE:			TN
		ZIP:			37228

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fritch Herbert A
		CENTRAL INDEX KEY:			0001351150

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32739
		FILM NUMBER:		08908126

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(615) 291-7000

	MAIL ADDRESS:	
		STREET 1:		HEALTHSPRING, INC.
		STREET 2:		44 VANTAGE WAY, SUITE 300
		CITY:			NASHVILLE
		STATE:			TN
		ZIP:			37228
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-06-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001339553</issuerCik>
        <issuerName>HealthSpring, Inc.</issuerName>
        <issuerTradingSymbol>HS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001351150</rptOwnerCik>
            <rptOwnerName>Fritch Herbert A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9009 CAROTHERS PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 501</rptOwnerStreet2>
            <rptOwnerCity>FRANKLIN</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37067</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman, CEO &amp; President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Forward sale contract (obligation to sell)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-06-17</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>150000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-12-31</value>
            </exerciseDate>
            <expirationDate>
                <value>2009-12-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>150000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>150000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On June 17, 2008, the reporting person entered into a prepaid variable forward sale contract with an unaffiliated third party buyer.  The contract obligates the reporting person to deliver to the buyer up to 150,000 shares of HealthSpring, Inc. (the &quot;Company&quot;) common stock (or, at the reporting person's election, an equivalent amount of cash based on the market price of Company common stock at that time) on the settlement date of the contract (December 31, 2009).  In exchange for assuming this obligation, the reporting person received a cash payment of $2,287,956.15 as of the date of entering into the contract.  The reporting person pledged 150,000 shares of Company common stock (the &quot;Pledged Shares&quot;) to secure his obligations under the contract, and retained dividend and voting rights in the Pledged Shares during the term of the pledge.</footnote>
        <footnote id="F2">The number of shares of Company common stock to be delivered to buyer on the maturity date is to be determined as follows: (a) if the price of a share of Company common stock on December 28, 2009 (the &quot;Final Price&quot;) is less than $18.23 (the &quot;Floor Strike Price&quot;), the reporting person will deliver to the buyer all of the Pledged Shares; (b) if the Final Price is between the Floor Strike Price and $25.522 (the &quot;Cap Strike Price&quot;), the reporting person will deliver to the buyer a number of shares of Company common stock having a value (based on the Final Price) equal to $2,734,500; and (c) if the Final Price is greater than the Cap Strike Price, the reporting person will deliver to the buyer a number of shares of Company common stock calculated using the following formula: [(Floor Strike Price/Final Price) + ((Final Price - Cap Strike Price)/Final Price)] X 150,000.</footnote>
        <footnote id="F3">The transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 9, 2008.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ J. Gentry Barden, Attorney-in-Fact</signatureName>
        <signatureDate>2008-06-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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