Spontaneous rupture of other tendons, left thigh

📋Clinical Description

This code signifies a non-traumatic tear of a tendon located in the left thigh, excluding the quadriceps or Achilles tendons. This rupture occurs without an external force or injury, often due to underlying degenerative changes or inflammatory processes within the tendon itself.

🎯When to Use

Apply this code when documentation clearly indicates a spontaneous (non-traumatic) rupture of a tendon in the left thigh, such as a hamstring tendon or adductor tendon. Supporting documentation should specify the spontaneous nature of the rupture and the exact location within the left thigh.

💡Coding Tips

Ensure the documentation explicitly states "spontaneous" or "non-traumatic" to differentiate from traumatic ruptures.
Verify the specific tendon involved is not the quadriceps (M66.84-) or Achilles (M66.87-), as these have more specific codes.
Confirm the laterality is clearly documented as "left thigh" to avoid miscoding.

AI-generated reference — verify against official guidelines

Code Hierarchy

▲M66.85Spontaneous rupture of other tendons, thigh

M66.852(current)

Crosswalks

727.69ApproxICD-9

Same Category

M66Spontaneous rupture of synovium and tendon M66.0Rupture of popliteal cyst M66.1Rupture of synovium M66.10Rupture of synovium, unspecified joint M66.11Rupture of synovium, shoulder