You are not legally required to disclose your ADHD diagnosis to your employer. If you are concerned that your fidgeting behaviors may lead your manager or coworkers to assume that you are not paying attention at work, then you may want to consider talking with them about it.
The content is intended to augment, not replace, information provided by your clinician. It is not intended nor implied to be a substitute for professional medical advice. Reading this information does not create or replace a doctor-patient relationship or consultation. If required, please contact your doctor or other health care provider to assist you in interpreting any of this information, or in applying the information to your individual needs.