42 C.F.R. § 88.19 – Decertification.

(a) The decertification of a WTC Health Program member's certified WTC-related health condition or health condition medically associated with a WTC-related health condition may be initiated by the WTC Health Program in the following circumstances:
1. (1) The WTC Health Program finds that the member's exposure is inadequate or is otherwise not covered;
2. (2) The WTC Health Program finds that the member's certified WTC-related health condition was certified in error or erroneously considered to have been aggravated, contributed to, or caused by exposure to airborne toxins, any other hazard, or any other adverse condition resulting from the September 11, 2001, terrorist attacks, pursuant to § 88.17(a); or
3. (3) The WTC Health Program finds that the member's health condition was erroneously determined to be medically associated with a WTC-related health condition, pursuant to § 88.17(b).
(b) A WTC Health Program member will be notified in writing by the WTC Health Program of a decertification decision, provided an explanation, as appropriate, for the decision, and provided information on how to appeal the decision. A WTC Health Program member whose WTC-related health condition or health condition medically associated with a WTC-related health condition is decertified may appeal the decertification decision in accordance with § 88.21 of this part.