ICD-9 codes with NO ICD-10 codes
I am having trouble with a whole list of ICD-9 codes that do not map to ICD-10. Some, like 365.70 was for staging and is no longer required in ICD-10, as stageing is included in the ICD-10 codes.
However alot of the Accidental poisoning codes (E855.9, E86.20, etc) do not map to ICD-10. Why not?
Some of the codes (E852.1, E853.8, etc) do seem to crosswalk to T42.6X1, with a 7th digit of A, D or S.... but the mapping tools do not show this. Why not?
And all of the E codes for 'therapeutic use' do not cross over to anything in ICD-10. Is that term just no longer used so there is no mapping to ICD-10?
Feeling overwhelmed.