The claimant sought a determination that she had sustained a catastrophic impairment as a result of the accident. The parties disputed causation with respect to the claimant’s impairments. Adjudicator Daoud confirmed that the “but for” test is the proper test for causation in accident benefits cases. Adjudicator Daoud found that “but for” the accident the claimant would not have suffered from her impairments, and she was catastrophically impaired due to Class 4 marked impairments in activities of daily living and adaptation; she did not consider the whole person impairment.