Hi @debbie75, Hoping other members experiencing Long COVID will share their experience with claiming disability. If you haven't already seen this, the CDC has some information on diagnosing LC.

"Testing and diagnosis
Long COVID is not one illness. There is no laboratory test that can determine if your symptoms or conditions are due to Long COVID. A positive SARS-CoV-2 test is not required for a Long COVID diagnosis. Your healthcare provider considers a diagnosis of Long COVID based on:
- Your health history
- If you had a diagnosis of COVID-19 by a positive test, symptoms, or exposure
- A health examination
Clinical evaluations and results of routine blood tests, chest X-rays, and electrocardiograms may be normal in someone with Long COVID. People experiencing Long COVID should seek care from a healthcare provider to create a personal medical management plan and improve their symptoms and quality of life. Talk to your healthcare provider if you think you or your child has Long COVID."
-- Long COVID Basics: https://www.cdc.gov/covid/long-term-effects/index.html

Also Health and Human Services has some information on claiming disability for LC.
-- Guidance on “Long COVID” as a Disability Under the ADA, Section 504, and Section 1557:
https://www.hhs.gov/civil-rights/for-providers/civil-rights-covid19/guidance-long-covid-disability/index.html