Code 92929 is an add-on code so no modifier is needed for the second procedure. Note that the codes indicate that they are for an artery or branch. A second code is not reported for multiple sites of the same artery or branch.
1 C1 and C2 (the first two cervical nerves) control the head. 2  C3 and C4 help control the diaphragm (the sheet of muscle that stretches to the bottom of the rib cage and plays an important role in breathing and respiration).atch Cervical Radiculopathy Video. In addition to the seven cervical vertebrae, cervical anatomy features eight cervical nerves (C1-C8) that branch off of the spinal cord and control different types of bodily and sensory activities. Each cervical nerve is named based on the lower cervical vertebra that it runs between.
In the lumbar spine it is the upper vertebrae that they are named after, hence L3 at the L3-L4 vertebrae. Although there are seven cervical vertebra, there are eight cervical nerves, which can cause some confusion when discussing the location of neck pain and the nerve causing it. The first cervical nerve (C1) emerges from between the Atlas and the occipital bone and is, therefore, called the suboccipital nerve. Nerves are protected by insulation in the majority of cases, and have the capacity to transmit or receive an electrical charge from the brain or from parts of the spinal cord.