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Manual muscle testing is a clinical procedure used to assess the strength and functionality of individual muscles and muscle groups throughout the body. This evaluation involves isolating a specific muscle or group of muscles and performing movements such as flexion, extension, abduction, or adduction while applying resistance, which can be provided by gravity or manual force. During the testing process, the patient is carefully positioned to ensure optimal testing conditions, and stabilization may be necessary, often utilizing equipment such as railings, bars, or external support belts. The healthcare provider instructs the patient on the required movements, which may be demonstrated to ensure understanding. The evaluation includes assessing passive range of motion, where the provider moves the patient through the test movements to identify any limitations in range of motion, weakness, or instability. Following this, the patient actively performs the movements against resistance to evaluate muscle strength. The provider documents the findings in a written report, which may include quantification of muscle function and strength using established grading systems, such as the Medical Research Council's Manual Muscle Testing Grades. It is important to note that different CPT® codes are designated for various muscle testing scenarios: code 95831 is used for muscle testing of the trunk or an extremity excluding the hand, code 95832 is for testing the hand with or without comparison to the hand on the normal side, code 95833 is for a total evaluation of the body excluding the hands, and code 95834 is specifically for a total evaluation of the body including the hands.
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