<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:301c9af3-4fd7-4e8d-a260-ee10866e164e,g:00dd57bf-3c40-45fc-a85d-579989f70016-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember_label_en-US" xlink:label="lab_dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Year-end Fair Value of Equity Awards Granted During Prior Years that Remained Unvested as of the End of the Covered Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:href="dxcm-20250327.xsd#dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:to="lab_dxcm_ChangeInYearEndFairValueOfEquityAwardsGrantedDuringPriorYearsThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember_label_en-US" xlink:label="lab_dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting Date Fair Value for Awards Granted and Vested in the Same Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember" xlink:href="dxcm-20250327.xsd#dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember" xlink:to="lab_dxcm_VestingDateFairValueForAwardsGrantedAndVestedInTheSameFiscalYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember_label_en-US" xlink:label="lab_dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prior Year-End Fair Value for Awards Granted in Prior Years that are forfeited during the Covered Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember" xlink:href="dxcm-20250327.xsd#dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember" xlink:to="lab_dxcm_PriorYearEndFairValueForAwardsGrantedInPriorYearsThatAreForfeitedDuringTheCoveredYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember_label_en-US" xlink:label="lab_dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deductions for amounts reported under the &#8220;Stock Awards&#8221; column in the Summary Compensation Table [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember" xlink:href="dxcm-20250327.xsd#dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember" xlink:to="lab_dxcm_DeductionsForAmountsReportedUnderTheStockAwardsColumnInTheSummaryCompensationTableMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember_label_en-US" xlink:label="lab_dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Year-end Fair Value of Equity Awards Granted During the Year that Remained Unvested as of the End of the Covered Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:href="dxcm-20250327.xsd#dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:to="lab_dxcm_YearEndFairValueOfEquityAwardsGrantedDuringTheYearThatRemainedUnvestedAsOfTheEndOfTheCoveredYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember_label_en-US" xlink:label="lab_dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change in Fair Value from Prior Year-end to Vesting Date for Awards Granted in Prior Years that Vested in Covered Fiscal Year [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember" xlink:href="dxcm-20250327.xsd#dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember" xlink:to="lab_dxcm_ChangeInFairValueFromPriorYearEndToVestingDateForAwardsGrantedInPriorYearsThatVestedInCoveredFiscalYearMember" xlink:type="arc" order="1"/>
  </link:labelLink>
</link:linkbase>
