Pregnancy-Related Clinical Codes in Unlikely Populations in Primary Care.
Curtis H., Inglesby P., Goldacre B., Higgins R., Mehrkar A., Bacon S., MacKenna B.
We discovered that the official list of clinical codes for pregnancy during the COVID-19 pandemic identified some unlikely pregnancies (for example, in older men), principally due to a code describing a specific fetal position ("knee presentation"), which notably lacks "fetal" in the code description. This is an informative example of commonly overlooked problems in creating and using clinical data.