Oth spon disrupt of anterior cruciate ligament of left knee

This code signifies a non-traumatic tear or rupture of the anterior cruciate ligament (ACL) in the left knee. This disruption occurs without an external force or injury, distinguishing it from tears caused by acute trauma. It represents a degenerative or spontaneous failure of the ligament.

Apply this code when documentation clearly indicates a spontaneous, non-traumatic rupture or tear of the left ACL. This would typically be diagnosed through imaging (MRI) and clinical examination, ruling out an acute injury mechanism. Use when the physician explicitly states "spontaneous disruption" or "degenerative tear" of the ACL.

• Differentiate carefully between spontaneous (M23.6-) and traumatic (S83.5-) ACL tears; the mechanism of injury is key.
• Ensure the laterality (left knee) is clearly documented to support this specific code.
• Do not use for chronic instability or old ACL tears without a documented spontaneous disruption.