Trigger finger, left ring finger

This code represents stenosing tenosynovitis affecting the flexor tendon of the left ring finger, commonly known as trigger finger. It is characterized by inflammation and narrowing of the tendon sheath, which impedes the smooth gliding of the tendon, leading to catching, locking, or snapping of the digit during flexion and extension.

Use this code when documentation clearly indicates a diagnosis of trigger finger specifically affecting the left ring finger. This typically occurs when a patient presents with pain, tenderness, and a palpable nodule at the base of the left ring finger, along with the characteristic catching or locking sensation.

• Ensure the documentation specifies "left" and "ring finger" to support this specific code.
• Do not confuse with trigger finger of other digits or unspecified trigger finger.
• Consider sequencing this code after any underlying systemic conditions that may contribute to trigger finger, such as rheumatoid arthritis or diabetes, if applicable.