Impairment
Impairment means any anatomic or functional abnormality or loss. A permanent impairment is any such abnormality or loss after maximum medical improvement has been achieved.
Source
20 CFR § 10.5
Scoping language
Certain words and phrases found in this part are defined in this section or in the FECA. Some other words and phrases that are used only in limited situations are defined in the later subparts of the regulations in this subchapter.