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CPT coding Infratrochlear nerve block

Mike Posted Wed 10th of February, 2016 16:16:53 PM

Is there current information on how to code a Infratrochlear nerve block and a zygomaticotemporal nerve block?

Is it 64402 or is it coded 64400 like the Supratrochlear, Supraorbital and Auriculotemporal nerve blocks?

SuperCoder Answered Thu 11th of February, 2016 06:26:13 AM

Infratrochlear Nerve Block:
The Infratrochlear Nerve is given off from the Nasocilliary Nerve, and the nasocilliary nerve is a branch of the ophthalmic nerve (V1; one of the three branches of the Trigeminal nerve)- So it should be coded to 64000- Injection, anaesthetic agent; Trigeminal nerve, any division or Branch.

Zygomaticotemporal Nerve Block:
The Zygomaticotemporal nerve (Temporal Branch) is a small nerve. It is derived from the Zygomatic nerve, a branch of the maxillary nerve, and the Maxillary nerve (Cranial nerve V2) is one of the 3 branches or divisions of the Trigeminal nerve, as it a branch of Trigeminal nerve so this should also be coded to 64400.

Supraorbital nerve block: should be coded with CPT 64400
The supraorbital nerve is a branch off of the Frontal nerve which is a branch off of the ophthalmic nerve which is the V1 division of the Trigeminal nerve (Cranial nerve V). It would be coded with 64400.

Auriculotemporal Nerve Block:
The auriculotemporal nerve is a branch of the mandibular nerve (V3), and the mandibular nerve (V3) is the largest of the three divisions of the trigeminal nerve, the fifth cranial nerve (CN V). So it should also be coded to CPT 64400.

Supratrochlear Nerve Block:
The supratrochlear nerve is a branch of the frontal nerve, which itself comes from the ophthalmic (V1) division of the trigeminal (or fifth) cranial nerve. So it should also be coded with CPT 64400.

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