S09.31Non-Billable (Header)Primary blast injury of earChild CodesS09.311Primary blast injury of right earS09.312Primary blast injury of left earS09.313Primary blast injury of ear, bilateralS09.319Primary blast injury of unspecified earCode Hierarchy└S09Other and unspecified injuries of head└S09.3Other specified and unspecified injury of middle and inner ear└S09.31Primary blast injury of ear└S09.31Primary blast injury of ear