ICD-10-CM > V00-Y99 > W20-W49 > W44 > W44.A > W44.A9 W44.A9 Other batteries entering into or through a natural orifice Non-Billable/Non-Specific Applicable To Cylindrical battery entering into or through a natural orifice Codes W44.A9XA..., initial encounterW44.A9XD..., subsequent encounterW44.A9XS..., sequela