Secondary Condition Claim · VASRD 6354
A condition caused or aggravated by an already service-connected disability can be granted its own service connection as a secondary condition under 38 CFR § 3.310. Here's how that works for Chronic Fatigue Syndrome (CFS) when it develops after Ankylosis of the Spine.
Stiff vertebrae
Primary condition · VASRD 5286
Ankylosis of the Spine
Fusion of spinal joints causing stiffness and reduced movement.
Secondary condition · VASRD 6354
Chronic Fatigue Syndrome (CFS)
CFS causes persistent fatigue not improved by rest and worsened by physical or mental activity.
The VA rates Chronic Fatigue Syndrome (CFS) the same way whether it's claimed directly or as secondary to Ankylosis of the Spine — severity of Chronic Fatigue Syndrome (CFS) itself determines the percentage.
| Rating | Criteria |
|---|---|
| 100% | You can’t perform any regular activity due to extreme fatigue. |
| 60% | You're only able to function about half the time due to fatigue. |
| 40% | Significant exhaustion that limits what you can do most days. |
| 20% | Chronic tiredness that limits your lifestyle and function. |
| 10% | Occasional fatigue that interferes with daily tasks. |
Example combined rating
40% Ankylosis of the Spine + 40% Chronic Fatigue Syndrome (CFS) = 64%
The VA combines ratings with Table I of 38 CFR 4.25, not simple addition — 40% and 40% combine to 64%, not 80%. These figures are illustrative; your actual rating for each condition depends on your own evaluation.
Primary condition
Full Ankylosis of the Spine guide
Secondary condition
Full Chronic Fatigue Syndrome (CFS) guide
See how Ankylosis of the Spine and Chronic Fatigue Syndrome (CFS) combine with the rest of your service-connected conditions using the official VA combined-ratings formula.
Open the calculator