Unspecified mononeuropathy of bilateral upper limbs

This diagnosis code signifies a nerve disorder affecting both upper extremities, where the specific nerve involved is not identified. It indicates damage or dysfunction to a single nerve in each arm, resulting in symptoms such as pain, numbness, tingling, or weakness. The etiology of the mononeuropathy is also unspecified.

Apply this code when documentation clearly indicates bilateral upper limb mononeuropathy, but the specific nerve (e.g., median, ulnar, radial) is not diagnosed. This is appropriate for initial encounters where further diagnostic workup is pending, or when the physician explicitly states "unspecified mononeuropathy" affecting both arms.

• Avoid using this code if a more specific nerve is documented (e.g., carpal tunnel syndrome).
• Ensure the documentation explicitly states "bilateral" involvement of the upper limbs.
• Query the provider for greater specificity if possible, as a more precise diagnosis will lead to a more accurate code.