EOD Regional Nodes
Notes
**Note 1:** For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by TNM.
**Note 2:** If laterality of lymph nodes is not specified, assume nodes are ipsilateral. Midline nodes are ipsilateral.
**Note 3:** Supraclavicular lymph nodes can be either Level IV or Level V
* Level IV: deep to the sternocleidomastoid muscle, in the lower jugular chain
* Level V: in the posterior triangle, inferior to the transverse cervical artery, supraclavicular lymph nodes, NOS
**Note 4:** Code 800 if regional lymph nodes are involved, but there is no indication which ones are involved.
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