Lateral epicondylitis, left elbow

This code identifies inflammation and pain affecting the tendons on the outer side of the left elbow, specifically at the lateral epicondyle. It is commonly known as "tennis elbow" and results from repetitive wrist extension and forearm rotation.

Assign this code when documentation clearly indicates a diagnosis of lateral epicondylitis affecting the patient's left elbow. Supporting clinical notes should describe symptoms such as localized pain, tenderness, and possibly weakness in the left forearm or wrist, exacerbated by gripping or lifting.

• Ensure laterality is explicitly documented as "left" to avoid unspecified coding.
• Distinguish from medial epicondylitis (golfer's elbow), which affects the inner elbow.
• Look for documentation of chronicity or acute exacerbation if further specificity is needed (e.g., M77.10 for unspecified laterality).