<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001828131</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>



</filerInfo>
</headerData>
<formData>
<issuerInfo>
<issuerCik>0001439725</issuerCik>
<issuerName>BIODESIX INC</issuerName>
<secFileNumber>001-39659</secFileNumber>
<issuerAddress>
<com:street1>919 WEST DILLON RD</com:street1>
<com:city>LOUISVILLE</com:city>
<com:stateOrCountry>CO</com:stateOrCountry>
<com:zipCode>80027</com:zipCode>
</issuerAddress>
<issuerContactPhone>303-417-0500</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>O'Kane Kieran</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Officer</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Morgan Stanley Smith Barney LLC</name>
<address>
<com:street1>1 New York Plaza</com:street1>
<com:street2>38th Floor</com:street2>
<com:city>New York</com:city>
<com:stateOrCountry>NY</com:stateOrCountry>
<com:zipCode>10004</com:zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>17527</noOfUnitsSold>
<aggregateMarketValue>16650.65</aggregateMarketValue>
<noOfUnitsOutstanding>145467295</noOfUnitsOutstanding>
<approxSaleDate>02/11/2025</approxSaleDate>
<securitiesExchangeName>NASDAQ</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<acquiredDate>02/10/2025</acquiredDate>
<natureOfAcquisitionTransaction>Settlement of vested RSUs issued under an S-8 Registered Plan</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>48118</amountOfSecuritiesAcquired>
<paymentDate>02/10/2025</paymentDate>
<natureOfPayment>Equity compensation for services rendered</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>Kieran O'Kane</name>
<address>
<com:street1>919 WEST DILLON RD</com:street1>
<com:city>LOUISVILLE</com:city>
<com:stateOrCountry>CO</com:stateOrCountry>
<com:zipCode>80027</com:zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<saleDate>11/12/2024</saleDate>
<amountOfSecuritiesSold>224</amountOfSecuritiesSold>
<grossProceeds>313.78</grossProceeds>
</securitiesSoldInPast3Months>
<remarks>Shares sold automatically to cover taxes upon the vesting of RSUs</remarks>
<noticeSignature>
<noticeDate>02/11/2025</noticeDate>
<signature>/s/ Kieran O'Kane</signature>
</noticeSignature>
</formData>
</edgarSubmission>
