ICD-10-CM > H60-H95 > H65-H75 > H70 > H70.0 > H70.00 H70.00 Acute mastoiditis without complications Non-Billable/Non-Specific Codes H70.001Acute mastoiditis without complications, right earH70.002Acute mastoiditis without complications, left earH70.003Acute mastoiditis without complications, bilateralH70.009Acute mastoiditis without complications, unspecified ear