Injury of musculocutaneous nerve, unspecified arm, sequela

This code signifies a long-term complication or late effect resulting from a past injury to the musculocutaneous nerve in an unspecified arm. These sequelae can manifest as persistent weakness, sensory deficits (numbness, tingling), or pain in the areas innervated by this nerve, such as the biceps, brachialis, and lateral forearm.

Use this code when documenting a patient presenting with residual symptoms directly attributable to a previous musculocutaneous nerve injury in an arm, where the specific arm (left or right) is not documented. This applies to conditions like chronic muscle atrophy, ongoing paresthesia, or diminished reflexes that are a direct consequence of the original trauma.

• Always sequence this sequela code after the code for the specific nature of the sequela (e.g., muscle weakness, sensory loss).
• Ensure documentation clearly links the current symptoms to a past musculocutaneous nerve injury.
• Avoid using this code for acute injuries; it is strictly for late effects.