There is never an "always" level for any diagnosis. That is why there are coders who are educated about coding guidelines. Yes, it might be 99213 95% of the time, but each visit should be coded based on documentation of this specific patient's care.
Regarding data for tests. 1) Review is included in ordering and you would count it at the order only. Exception for tests not ordered by your practice or tests ordered not at a visit. 2) If the test ordered has a professional component, and your practice is performing and billing the test, you count nothing toward data on the E/M. The practice is already being paid for the work of ordering/reviewing by performing the professional component of the test. I know nothing about audiology tests to know if there is a professional component.
From the 2021 AMA guidelines:
The ordering and actual performance and/or interpretation of diagnostic tests/studies during a patient encounter are not included in determining the levels of E/M services when the professional interpretation of those tests/studies is reported separately by the physician or other qualified health care professional reporting the E/M service. Tests that do not require separate interpretation (eg, tests that are results only) and are analyzed as part of MDM do not count as an independent interpretation, but may be counted as ordered or reviewed for selecting an MDM level. Physician performance of diagnostic tests/studies for which specific
CPT codes are available may be reported separately, in addition to the appropriate E/M code. The physician’s interpretation of the results of diagnostic tests/studies (ie, professional component) with preparation of a separate distinctly identifiable signed written report may also be reported separately, using the appropriate CPT code and, if required, with modifier 26 appended. If a test/study is independently interpreted in order to manage the patient as part of the E/M service, but is not separately reported, it is part of MDM.
DATA SUMMARY: If the test has a professional component and you perform it, count no data. If the test does not have a professional component or your practice is not performing it, then count it at the order.
Regarding hearing aids, I have not seen any official guidance or example using hearing aids. I personally think it would fall under same risk as PT/OT and would count low risk.