M21 - Other acquired deformities of limbs
M21.3 - Wrist or foot drop (acquired)
M21.33 - Wrist drop (acquired)
M21.331 - Wrist drop, right wrist
M21.332 - Wrist drop, left wrist
M21.339 - Wrist drop, unspecified wrist
M21.37 - Foot drop (acquired)
M21.371 - Foot drop, right foot
M21.372 - Foot drop, left foot
M21.379 - Foot drop, unspecified foot