ICD-10-CM>V00-Y99>X30-X39>X39X39Exposure to other forces of natureNon-Billable/Non-SpecificCodesX39.0Exposure 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