ICD-10-CM > M00-M99 > M05-M14 > M07 > M07.6 > M07.66 M07.66 Enteropathic arthropathies, knee Non-Billable/Non-Specific Codes M07.661Enteropathic arthropathies, right kneeM07.662Enteropathic arthropathies, left kneeM07.669Enteropathic arthropathies, unspecified knee