Trigger finger, left middle finger

This code identifies a stenosing tenosynovitis affecting the flexor tendon of the left middle finger, characterized by catching or locking of the digit during flexion and extension. It results from inflammation and thickening of the tendon sheath, impeding smooth tendon gliding.

Assign this code when documentation clearly indicates a diagnosis of trigger finger specifically affecting the left middle finger. Supporting documentation should include physical exam findings such as a palpable nodule, tenderness, and characteristic catching or locking of the digit.

• Ensure the laterality (left) and specific digit (middle finger) are explicitly documented.
• Do not confuse with other tenosynovitis codes or codes for general finger pain without the characteristic "triggering" phenomenon.
• Consider sequencing with codes for underlying conditions like rheumatoid arthritis or diabetes if they are causally linked and documented.