Icd 10 code for chf exacerbation unspecified July 8, 2019 16 32 64 128 Icd 10 code for acute chf exacerbation unspecified Icd 10 code for acute on chronic chf exacerbation unspecified Chf exacerbations icd 10 Icd 10 code for chf exacerbation Icd 9 chf exacerbation