Does the 5-year protected rating rule still apply when filing a new condition as secondary to an already-rated disability?

Under 38 CFR 3.951(b) and the related protection provisions found in 38 CFR 3.344, a disability rating that has been continuously in effect for 5 years or more is considered a stabilized or protected rating. This means the VA generally cannot reduce that rating unless it can show sustained material improvement under ordinary conditions of life, based on a full and thorough examination, and it must follow specific due-process steps (proposed reduction notice, 60-day response period, etc.) before doing so.

Filing a new claim for a secondary condition, such as migraines secondary to PTSD under 38 CFR 3.310, does not by itself reopen or trigger a reevaluation of the primary condition's rating. The two are legally separate actions. A secondary service connection claim asks the VA to determine whether the new condition (migraines) is proximately caused or aggravated by the already service-connected condition (PTSD). Adjudicators are supposed to evaluate the secondary claim on its own medical evidence, not use it as an occasion to re-examine the underlying PTSD rating. In practice, a Compensation & Pension examiner may ask general history questions about the PTSD during a migraine exam, but this is not the same as ordering a new PTSD examination for rating-reduction purposes. The VA cannot use a secondary claim as a backdoor way to circumvent the 3.344 protections; if it wants to reduce the protected PTSD rating, it must do so through its own separate reduction process with proper notice, not incidentally through a migraine adjudication.

For the secondary migraine claim itself, the standard three-part test applies: current diagnosis, evidence the primary condition is service-connected, and a medical nexus opinion linking the two. A private nexus letter and a completed Disability Benefits Questionnaire addressing frequency, duration, and prostrating nature of the headaches, along with documentation of prescribed abortive and preventive medications, are the kind of evidence VA raters look for when applying the migraine rating criteria under 38 CFR 4.124a.

The concrete next step is to file the secondary claim using VA Form 21-526EZ, attach the private DBQ and nexus opinion, and keep a copy of the current PTSD rating decision on hand in case you need to point to its 5-year protected status if the VA mistakenly proposes any adjustment to that rating during processing.