Osteochondrosis (juvenile) of carpal lunate, left hand

This code signifies Kienböck's disease affecting the lunate bone in the left wrist. It is an osteonecrosis, or avascular necrosis, of the carpal lunate, leading to fragmentation and collapse of the bone, primarily seen in adolescents and young adults. This condition can cause chronic wrist pain, stiffness, and decreased grip strength.

Apply this code when documentation explicitly states a diagnosis of Kienböck's disease or osteochondrosis of the lunate bone, specifically affecting the left hand. Supporting documentation would include imaging reports (X-ray, MRI) confirming avascular necrosis of the left lunate, along with clinical notes detailing symptoms and physical examination findings consistent with the condition.

• Ensure laterality is clearly documented and accurately coded (left vs. right).
• Distinguish from other wrist osteochondroses, such as Preiser's disease (scaphoid).
• Consider sequencing with codes for associated symptoms like wrist pain (M25.532) or degenerative arthritis if present.