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Neurology & Pain Management Coding Alert

Reader Questions:

Point to 64405 for GON Blocks

Published on Sun Nov 27, 2011

Question:How should I code a left GON block?Washington Subscriber Answer:Use 64405 (Injection, anesthetic agent; greater occipital nerve) and modifier LT (Left) to report the unilateral greater occipital nerve (GON) block. Neurologists often use occipital nerve blocks for patients with 723.8 (Occipital neuralgia). This condition produces an aching, burning, or throbbing pain, or a tingling or numbness, along the back of the head. The GON originates from the C2 spinal nerve and provides sensory innervation to the back of the scalp extending to the top of the head. Your neurologist will typically inject the GON just above the base of the skull for occipital or cervicogenic headaches or neck pain. Tip: You'll find it helpful to note that GON blocks are different from facial nerve blocks, which you report with 64402 (Injection, anesthetic agent; facial nerve). Facial nerve blocks are often administered just in front of the ear.Your neurologist should clearly indicate [...]
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