-----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,
 D2L+4gPycyPdNHbVEcxOD4G0CKWMedB/e7fpB6Dq7kKRanE70G9QsU9KSq3Po7RS
 gRjvM5QflOj1mOp0kJX+0g==

<SEC-DOCUMENT>0001310450-06-000001.txt : 20060117
<SEC-HEADER>0001310450-06-000001.hdr.sgml : 20060116
<ACCEPTANCE-DATETIME>20060117081158
ACCESSION NUMBER:		0001310450-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060113
FILED AS OF DATE:		20060117
DATE AS OF CHANGE:		20060117

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PAINE CHRISTOPHER
		CENTRAL INDEX KEY:			0001310450

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32698
		FILM NUMBER:		06531363

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		011442075984070

	MAIL ADDRESS:	
		STREET 1:		46 BERKELEY SQUARE
		CITY:			LONDON
		STATE:			X0
		ZIP:			W1J 5AT

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MEDICSIGHT INC
		CENTRAL INDEX KEY:			0001001601
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				133758042
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		46 BERKELEY SQUARE
		CITY:			LONDON UNITED KINGDO
		ZIP:			W1Y 7FF
		BUSINESS PHONE:		2124064700

	MAIL ADDRESS:	
		STREET 1:		C/O LAW OFFICE OF BECKMAN MILLMAN & SAND
		STREET 2:		116 JOHN STREET
		CITY:			NEW YORKMELVILLE
		STATE:			NY
		ZIP:			10038

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HTTP TECHNOLOGY INC
		DATE OF NAME CHANGE:	20001016

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNET HOLDINGS INC
		DATE OF NAME CHANGE:	19980520

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHINA BIOMEDICAL GROUP INC
		DATE OF NAME CHANGE:	19951003
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-01-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001001601</issuerCik>
        <issuerName>MEDICSIGHT INC</issuerName>
        <issuerTradingSymbol>MGT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001310450</rptOwnerCik>
            <rptOwnerName>PAINE CHRISTOPHER</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>46 BERKELEY SQUARE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>W1J 5AT</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2006-01-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2200</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>CHRISTOPHER PAINE</signatureName>
        <signatureDate>2006-01-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----