ICD-10-CM > V00-Y99 > X30-X39 > X37 > X37.4 > X37.41 X37.41 Tidal wave due to earthquake or volcanic eruption Non-Billable/Non-Specific Applicable To Tidal wave NOSTsunami Codes X37.41XA..., initial encounterX37.41XD..., subsequent encounterX37.41XS..., sequela