Ankylosis, unspecified elbow

This code signifies the pathological stiffening and immobility of an elbow joint due to fusion of the bones. This condition results in a significant loss of range of motion and functional impairment of the affected arm. The specific cause of the ankylosis is not identified.

Use this code when documentation clearly indicates ankylosis of the elbow joint without specifying laterality (right or left) or the underlying etiology. This code is appropriate when the provider has diagnosed elbow ankylosis but further details are unavailable or not yet determined.

• Avoid using this code if the laterality of the elbow (right or left) is documented; instead, use the more specific codes M24.621 or M24.622.
• Do not use this code if the underlying cause of the ankylosis (e.g., rheumatoid arthritis, trauma) is known; instead, code the primary condition first, followed by the appropriate ankylosis code.
• Ensure documentation supports the diagnosis of ankylosis, typically through imaging studies (X-rays) demonstrating joint fusion or clinical notes describing complete immobility.