ICD 10 CM Codes Seem Incorrect.

[vanessailana]

Hello, I am conducting a study on the amazing ICD-10 Codes from the Physionet dataset. I am examining a subset of the clinical notes, and I have noticed that some notes do not mention the ICD diagnosis associated with them. For instance a patient could be associated to the hypothermia ICD-10 CM code, but there is no mention of hypothermia in any of the clinical notes associated to them.

How were these codes derived?

Best, Vanessa