Not in the least bit surprised.

Someone just sent me this:

Your diagnosis code is used for many things including but not limited to; billing insurance companies, research, demographics, TRACKING and many more.

https://www.aafp.org/pubs/fpm/blogs/gettingpaid/entry/covid_immunization_codes.html

ICD 10 codes implemented in 2015 (original date 2013) in order to get reimbursed from insurance companies (payers).

https://icd.codes/articles/icd9-to-icd10-explained

And everything about you is collected on Epic EHR (electronic healthcare record).

Epic Systems Corporation , or Epic , is an American privately held healthcare software company. According to the company, hospitals that use its software held medical records of 78% of patients in the United States and over 3% of patients worldwide in 2022.

Not in the least bit surprised.