Preauricular Sinus Swollen Swollen Preauricular Sinus Swollen Preauricular Sinus MarhtyuettahtyuiSalas Friday, May 5, 2017 2017 icd10cm diagnosis code q18.1 preauricular sinus. Unfastened, respectable coding information for 2016/17 icd10cm q18.1 includes coding r...