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<edgarSubmission>

    <schemaVersion>X0708</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0002087033</cik>
        <entityName>OrbiMed Private Investments X, LP</entityName>
        <issuerAddress>
            <street1>601 LEXINGTON AVENUE</street1>
            <street2>54TH FLOOR</street2>
            <city>NEW YORK</city>
            <stateOrCountry>NY</stateOrCountry>
            <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
            <zipCode>10022</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>212-739-6400</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2025</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>OrbiMed Capital GP X, LP</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>General Partner of the Issuer (the &quot;GPLP&quot;)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>OrbiMed Capital GP X LLC</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>General Partner of the GPLP (the &quot;GPLLC&quot;)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>N/A</firstName>
                <lastName>OrbiMed Advisors LLC</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>601 Lexington Avenue</street1>
                <street2>54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Managing Member of the GPLLC (&quot;OrbiMed Advisors&quot;)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Mona</firstName>
                <lastName>Ashiya</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <middleName>P.</middleName>
                <lastName>Bonita</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Carl</firstName>
                <middleName>L.</middleName>
                <lastName>Gordon</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Geoffrey</firstName>
                <middleName>C.</middleName>
                <lastName>Hsu</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>W.</firstName>
                <middleName>Carter</middleName>
                <lastName>Neild</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Matthew</firstName>
                <middleName>S.</middleName>
                <lastName>Rizzo</lastName>
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            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>C.</firstName>
                <middleName>Scotland</middleName>
                <lastName>Stevens</lastName>
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            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Peter</firstName>
                <middleName>A.</middleName>
                <lastName>Thompson</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o OrbiMed Advisors LLC</street1>
                <street2>601 Lexington Avenue, 54th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10022</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of OrbiMed Advisors</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Private Equity Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <revenueRange>Not Applicable</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06b</item>
            <item>3C</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0002087033-26-000001</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2025-09-30</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>UBS Switzerland AG</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>Bahnhofstrasse 45</street1>
                    <city>Zurich</city>
                    <stateOrCountry>V8</stateOrCountry>
                    <stateOrCountryDescription>SWITZERLAND</stateOrCountryDescription>
                    <zipCode>CH-8001</zipCode>
                </recipientAddress>
                <statesOfSolicitationList></statesOfSolicitationList>
                <foreignSolicitation>true</foreignSolicitation>
            </recipient>
            <recipient>
                <recipientName>MERRILL LYNCH, PIERCE, FENNER &amp; SMITH INCORPORATED</recipientName>
                <recipientCRDNumber>7691</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>ONE BRYANT PARK</street1>
                    <city>NEW YORK</city>
                    <stateOrCountry>NY</stateOrCountry>
                    <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                    <zipCode>10036</zipCode>
                </recipientAddress>
                <statesOfSolicitationList>
                    <value>All States</value>
                </statesOfSolicitationList>
                <foreignSolicitation>false</foreignSolicitation>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1921099472</totalOfferingAmount>
            <totalAmountSold>1921099472</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse>The total amount sold includes capital committed by the General Partner.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>131</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </findersFees>
            <clarificationOfResponse>Paid based on a percentage of committed capital of investors introduced by selling agent. Management fees will be offset by any such amounts paid by the Issuer. Such amounts do not reduce the offering proceeds available for investment.</clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>An affiliate of the GPLP will receive a fee for management services. The fee will equal a percentage of aggregate subscriptions of the Issuer's limited partners during the active investment period and a percentage tied to invested capital thereafter.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>OrbiMed Private Investments X, LP</issuerName>
                <signatureName>/s/ W. Carter Neild</signatureName>
                <nameOfSigner>W. Carter Neild</nameOfSigner>
                <signatureTitle>Member of OrbiMed Advisors</signatureTitle>
                <signatureDate>2026-10-16</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
