W94.2Non-billable (header)
Exposure to rapid changes in air pressure during ascent
Sub-codes of W94.2(4)
W94.2 is a non-billable header. Select a sub-code to bill. Sub-codes marked ⚠ require a 7th character — append A, D, or S (and an X placeholder if needed).
W94.21Exposure to reduction in atmospheric pressure while surfacin…⚠ 7th charW94.22Exposure to reduction in atmospheric pressure while surfacin…⚠ 7th charW94.23Exposure to sudden change in air pressure in aircraft during…⚠ 7th charW94.29Exposure to other rapid changes in air pressure during ascen…⚠ 7th char
Code Hierarchy
┌20External causes of morbidity (V00-Y99)├W85-W99Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99)├W94Exposure to high and low air pressure and changes in air pressure
└W94.2Exposure to rapid changes in air pressure during ascent
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