Which step involves preparing raw clinical text for analysis by removing irrelevant information?

The correct choice involves the step of preprocessing, which is a fundamental part of preparing raw clinical text for further analysis. In the context of natural language processing and medical billing and coding, preprocessing refers to techniques used to clean and format the data before applying analytical methods. This step includes tasks such as removing irrelevant information, filtering out noise, normalizing the text, and converting it into a suitable format for analysis.

By effectively preprocessing text, practitioners can ensure that the data is more manageable, focused, and relevant for subsequent analysis, such as classification or entity recognition. This enhances the accuracy and efficiency of further processing steps, ultimately leading to improved outcomes in tasks like medical coding and billing.