728.4
ICD-9-CMThis code describes an abnormal looseness or instability of a ligament, which is a band of fibrous tissue connecting bones or cartilages. This laxity can result in excessive joint movement, potentially leading to pain, instability, and increased risk of injury. It indicates a structural compromise of the ligament's ability to provide normal joint stability.
Use this code when documentation explicitly states "ligamentous laxity," "ligament laxity," or "hypermobility of a ligament" without a specific traumatic injury or tear. This often applies to constitutional hypermobility syndromes, chronic instability not attributed to an acute sprain, or post-surgical laxity. Supporting documentation should include physical exam findings noting increased joint play or range of motion beyond normal limits due to ligamentous looseness.
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