Icd 10 code acute frontal sinusitis July 8, 2019 16 32 64 128 Icd 10 code for acute frontal sinusitis recurrence not specified Icd 10 code for acute frontal sinusitis unspecified Icd 10 cm code acute frontal sinusitis Icd 10 code for acute recurrent frontal sinusitis Icd 10 cm code for acute recurrent frontal sinusitis Acute frontal sinusitis icd 10