Cervical Radiculopathy (Upper Extremity) Secondary to Cervical Spine Degenerative Disc Disease

Yes. Under 38 CFR § 3.310(a), any disability proximately caused or chronically worsened by a service-connected condition is itself service-connected. Cervical Radiculopathy (Upper Extremity) is a documented secondary pairing for Cervical Spine Degenerative Disc Disease with strong medical evidence. A nexus letter from a qualified physician linking the two conditions is the most reliable way to establish this connection.

The gold standard is a private nexus opinion stating — to at least a 50% probability ("at least as likely as not") — that the secondary condition was caused or aggravated by the primary service-connected condition. Peer-reviewed medical literature supporting the physiological mechanism strengthens the nexus. Treatment records documenting the onset or worsening of the secondary condition in temporal relation to the primary are supporting evidence.

The VA rates Cervical Radiculopathy (Upper Extremity) separately under its own 38 CFR Part 4 diagnostic code, then combines it with Cervical Spine Degenerative Disc Disease and all other service-connected ratings using the combined ratings formula under § 4.25. The formula applies the whole-person concept: a 50% combined existing rating plus a new 30% rating yields 65% (rounded to 70%), not 80%.

38 CFR § 3.310(a) states: "Disability which is proximately due to or the result of a service-connected disease or injury shall be service connected." The aggravation variant under § 3.310(b) applies where the primary condition permanently worsens a pre-existing disability beyond its natural progression. Both standards require a showing of nexus — a medical or scientific link between the primary condition and the secondary.

The medical evidence supporting Cervical Radiculopathy (Upper Extremity) as secondary to Cervical Spine Degenerative Disc Disease is rated strong. Cervical degenerative disc disease (DDD) produces radiculopathy through progressive disc height loss, posterior osteophyte formation, and uncovertebral joint hypertrophy that narrows the neural foramina. As the disc degenerates, the annulus bulges posterolaterally into the foramen while osteophytes grow from the uncovertebral and facet joints, compressing the exiting cervical nerve root. The compressed root develops intraneural edema, demyelination, and eventually Wallerian degeneration, producing pain, numbness, and weakness in the corresponding dermatome/myotome (most commonly C6 and C7 distributions). This is a direct anatomical consequence of the degenerative process — over 70% of patients with advanced cervical DDD develop electrodiagnostic evidence of radiculopathy.

The VA will not solicit nexus evidence on your behalf for secondary claims. In practice, a written nexus opinion from a private physician or independent medical examiner is essential — the VA's Compensation & Pension (C&P) examiner is not required to produce a favorable nexus opinion, and the VA has discretion to weigh competing opinions. Submitting a private nexus letter at the time of filing is the most reliable strategy.