ICD-10-CM > H60-H95 > H65-H75 > H70 > H70.2 > H70.21 H70.21 Acute petrositis Non-Billable/Non-Specific Codes H70.211Acute petrositis, right earH70.212Acute petrositis, left earH70.213Acute petrositis, bilateralH70.219Acute petrositis, unspecified ear