ICD-10-CM > M00-M99 > M70-M79 > M77 > M77.0 M77.0 Medial epicondylitis Non-Billable/Non-Specific Codes M77.00Medial epicondylitis, unspecified elbowM77.01Medial epicondylitis, right elbowM77.02Medial epicondylitis, left elbow