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85b-9a
85B.9A APPORTIONMENT OF OCCUPATIONAL HEARING LOSS.
Apportionment of the total hearing loss between occupational and
nonoccupational loss, for purposes of determining occupational
hearing loss, may be made by an audiologist or physician with
qualifications set forth in section 85B.9. In determining
occupational hearing loss, consideration shall be given to all
probable employment and nonemployment sources of loss. The
apportionment of age- related loss shall be made by reducing the
total binaural percentage hearing loss as calculated pursuant to
section 85B.9, subsection 3, by the same percentage as the decibels
of age-related loss occurring during the period of employment bears
to the total decibel hearing level in each ear. The decibels of
age-related loss shall be calculated according to tables adopted by
the workers' compensation commissioner consistent with tables of the
national institute for occupational safety and health existing on
July 1, 1998, and consistent with section 85B.9, subsection 3. Section History: Recent Form
98 Acts, ch 1160, §7
