ICD-10-CM > A00-B99 > B25-B34 > B26 > B26.8 B26.8 Mumps with other complications Non-Billable/Non-Specific Codes B26.81Mumps hepatitisB26.82Mumps myocarditisB26.83Mumps nephritisB26.84Mumps polyneuropathyB26.85Mumps arthritisB26.89Other mumps complications