This code system https://fhir.bbmri.de/CodeSystem/StorageTemperature defines the following codes:

Code Display Definition
temperature2to10 Degrees Celsius 2 to 10
temperature-18to-35 Degrees Celsius -18 to -35
temperature-60to-85 Degrees Celsius -60 to -85
temperatureGN Gaseous nitrogen
temperatureLN Liquid nitrogen
temperatureRoom Room temperature
temperatureOther Other storage temperature
<status value="active" /> <date value="2020-05-28T14:12:37+00:00" /> <publisher value="BBMRI.de" /> <contact> <telecom> <system value="url" /> <value value="https://www.bbmri.de" /> </telecom> <telecom> <system value="email" /> <value value="feedback@germanbiobanknode.de" /> </telecom> </contact> <content value="complete" /> <concept> <code value="temperature2to10" /> <display value="Degrees Celsius 2 to 10" /> </concept> <concept> <code value="temperature-18to-35" /> <display value="Degrees Celsius -18 to -35" /> </concept> <concept> <code value="temperature-60to-85" /> <display value="Degrees Celsius -60 to -85" /> </concept> <concept> <code value="temperatureGN" /> <display value="Gaseous nitrogen" /> </concept> <concept> <code value="temperatureLN" /> <display value="Liquid nitrogen" /> </concept> <concept> <code value="temperatureRoom" /> <display value="Room temperature" /> </concept> <concept> <code value="temperatureOther" /> <display value="Other storage temperature" /> </concept> </CodeSystem>