Ankylosis, left hip

This code signifies the pathological fusion or stiffening of the left hip joint, resulting in a significant loss of range of motion. This condition can be caused by various factors, including chronic inflammatory arthritis, trauma, or degenerative processes, leading to immobility and pain.

Apply this code when documentation clearly indicates a diagnosis of ankylosis affecting the left hip joint. This typically includes findings from physical examination noting severely restricted hip movement, and often supported by imaging studies such as X-rays demonstrating joint fusion.

• Ensure documentation specifies "left hip" to differentiate from bilateral or unspecified hip involvement.
• Do not confuse with arthrosis or osteoarthritis, which describe joint degeneration but not necessarily complete fusion.
• Look for underlying causes of the ankylosis, such as rheumatoid arthritis or post-traumatic conditions, and code them as primary diagnoses if applicable, with ankylosis as a secondary condition.