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Secondary Condition Claim · VASRD 6354

Chronic Fatigue Syndrome (CFS) Secondary to Ankylosis of the Spine

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.

Why Chronic Fatigue Syndrome (CFS) Is Linked to 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.

Chronic Fatigue Syndrome (CFS) VA Rating Tiers

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.

RatingCriteria
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.

Evidence for a Chronic Fatigue Syndrome (CFS) Secondary Claim

  • VA physician diagnosis of CFS
  • Labs ruling out other causes
  • Personal logs of fatigue patterns
  • C&P exam documenting activity limits

Common questions about Chronic Fatigue Syndrome (CFS) secondary to Ankylosis of the Spine

Can Chronic Fatigue Syndrome (CFS) be service-connected as secondary to Ankylosis of the Spine?
Yes. Under 38 CFR § 3.310, a condition that is caused or aggravated by an already service-connected disability can be granted secondary service connection. Stiff vertebrae You'll need a current Chronic Fatigue Syndrome (CFS) diagnosis and a medical nexus opinion linking it to your service-connected Ankylosis of the Sp…
What VA rating can I get for Chronic Fatigue Syndrome (CFS) as a secondary condition?
Chronic Fatigue Syndrome (CFS) is rated under VASRD diagnostic code 6354 using the same criteria whether it's a direct or secondary claim: possible ratings are 100%, 60%, 40%, 20%, 10%. The rating depends on the severity of Chronic Fatigue Syndrome (CFS) itself, not on the severity of Ankylosis of the Spine.
How does a secondary Chronic Fatigue Syndrome (CFS) claim affect my combined VA rating?
The VA doesn't add ratings together. Using the official combined-ratings formula (38 CFR 4.25): a 40% rating for Ankylosis of the Spine combined with a 40% rating for Chronic Fatigue Syndrome (CFS) (example figures) produces a combined rating of 64%, not 80%. Approving Chronic Fatigue Syndrome (CFS) as secondary still…
What evidence do I need to service-connect Chronic Fatigue Syndrome (CFS) as secondary to Ankylosis of the Spine?
Strong evidence for the underlying Chronic Fatigue Syndrome (CFS) diagnosis includes: VA physician diagnosis of CFS; Labs ruling out other causes; Personal logs of fatigue patterns; C&P exam documenting activity limits. For the secondary link itself, a nexus letter from a treating provider explaining how Ankylosis of…

Primary condition

Full Ankylosis of the Spine guide

Secondary condition

Full Chronic Fatigue Syndrome (CFS) guide

Estimate your combined rating

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.

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