ICD-10-CM > M00-M99 > M70-M79 > M77 > M77.1 M77.1 Lateral epicondylitis Non-Billable/Non-Specific Applicable To Tennis elbow Codes M77.10Lateral epicondylitis, unspecified elbowM77.11Lateral epicondylitis, right elbowM77.12Lateral epicondylitis, left elbow