Criteria: Table 16-4 Hip Regional Grid (LEI) (501-508), Table 16-5 Adjustment Grid: Summary (515), Table 16-6 Functional History Adjustment – Lower Extremities (516), Table 16-7 Physical Examination Adjustment – Lower Extremities (517), Table 16-8 Clinical Studies Adjustment – Lower Extremities (519-520).
Accurately define diagnosis, and assess history, physical examination findings, and clinical studies, as explained in Section 16.1(494-496). Impairment is based on Diagnosis-Based Impairment (DBI). Diagnosis is specified in Table 16-4 (512-515). Assure accuracy of adjustment factors, net adjustment calculation, and grade modification. Impairment values are converted from LEI to WPI using Table 16-10 (530-531). Note revisions provided in “Corrections and Clarifications” (AMA Press, August 2008) on page 25 to Functional History Grade modifiers, on page 26 explaining that within a region the single most clinically accurate and causally related impairment should be used, and on page 27 that if a physical finding is used for class placement that specific finding should not be used to select a grade modifier. If significant, consistent motion impairment deficits result in greater impairment than DBI rate via Range of Motion. Figure 16-2 (498) summarizes findings.
