Coma scale, best motor response, extension, 24+hrs

This code indicates a specific finding on the Glasgow Coma Scale (GCS), where the patient exhibits an "extension" motor response. This response, characterized by abnormal extension of the limbs (decerebrate posturing), signifies severe neurological dysfunction. The code specifies that this finding was observed 24 hours or more after the patient's admission to the hospital.

Use this code when documentation clearly states a GCS motor score of 2, specifically noting an "extension" response, and this assessment occurred beyond the initial 24-hour period of hospitalization. This is typically seen in patients with severe traumatic brain injury, anoxic brain injury, or other profound neurological insults. Documentation should include the GCS score components and the time frame of assessment relative to admission.

• Ensure the motor response is explicitly documented as "extension" (decerebrate posturing) and not "abnormal flexion" (decorticate posturing), which has a different code.
• Verify the timing of the assessment; this code is specific to findings 24 hours or more after admission.
• Always sequence this code after the primary diagnosis indicating the underlying cause of the coma or altered mental status.