ICD-10-CM > V00-Y99 > X30-X39 > X30 > X30XXXA X30XXXA Exposure to excessive natural heat, initial encounter Billable/Specific Copy Code Copy Description Applicable To Exposure to excessive heat as the cause of sunstrokeExposure to heat NOS Type 1 Excludes excessive heat of man-made origin (W92)exposure to man-made radiation (W89)exposure to sunlight (X32)exposure to tanning bed (W89)