ICD-10-CM > V00-Y99 > W20-W49 > W44 > W44.9 W44.9 Unspecified foreign body entering into or through a natural orifice Non-Billable/Non-Specific Applicable To Foreign body NOS entering into or through a natural orifice Codes W44.9XXA..., initial encounterW44.9XXD..., subsequent encounterW44.9XXS..., sequela