ICD-10-CM > V00-Y99 > X30-X39 > X39 X39 Exposure to other forces of nature Non-Billable/Non-Specific Codes X39.0Exposure to natural radiationX39.01Exposure to radonX39.01XA..., initial encounterX39.01XD..., subsequent encounterX39.01XS..., sequelaX39.08Exposure to other natural radiationX39.08XA..., initial encounterX39.08XD..., subsequent encounterX39.08XS..., sequelaX39.8Other exposure to forces of natureX39.8XXA..., initial encounterX39.8XXD..., subsequent encounterX39.8XXS..., sequela