Secondary service connection
Migraine secondary to tinnitus: BVA grant rates and what wins
From 2017 to 2026, the Board of Veterans' Appeals decided migraine claimed as secondary to tinnitus in 1,203 decisions. It granted the issue in 34.2% of them, above the 30.7% grant rate for all migraine issues, denied it in 9.7%, and remanded it in 55.2%. Counting only decisions on the merits, 77.8% were granted.
From Board of Veterans' Appeals decisions: appeals, not VA's first decisions. About these numbers
Decisions
1,203
2017–2026
Granted
34.2%
All migraine: 30.7%
Granted on the merits
77.8%
Granted ÷ (granted + denied)
Remanded
55.2%
Denied: 9.7%
At a glance
- Most often argued link: stress, named in 33 issues, 48.5% granted. Details
- Causation only: 41.1% granted; when the decision discussed aggravation: 26.3%. Details
- Positive nexus opinion: 96.3% granted on the merits when in the record, 41.6% without. Details
- Private medical opinion: 86.3% granted on the merits when in the record, 57.4% without. Details
- Issues granted: 53.2% in 2018, 36.8% in 2026. Details
How these claims are argued
A secondary claim says tinnitus caused migraine or made it worse, and names how. Below: whether the Board's decision discussed aggravation, and the medical link each decision names, with how often those issues were granted.
Aggravation discussed
made worse by the disability, 3.310(b)
26.3%
granted, of 570 issues (47.3% of all)
Causation only
caused by the disability, 3.310(a)
41.1%
granted, of 635 issues (52.7% of all)
| Medical link named | Issues | Granted |
|---|---|---|
Stress Granted “A private physician opined it was at least as likely as not that the headaches were caused by the tinnitus, citing increased neural activity and stress as precursors.” A26001255 (2026) Denied “Migraines have genetic component and are linked to hypertension/stress.” 24012054 (2024) | 33 | 48.5% |
Sleep disruption Granted “August 2023 private opinion found aggravation by tinnitus/insomnia.” A26011562 (2026) | 16 | 25.0% |
Based on words in the AI-written summary and reasons for each issue, not a reading of the full decision. 5.5% of the 1,205 issues name at least one medical link; the rest only say “secondary to” the disability. One issue can name several links. Granted is the share of those issues granted (remands count as not granted). A link named in a denial was often the argument the Board rejected.
Evidence in granted and denied migraine decisions
For each kind of supporting evidence: how often the Board granted the migraine issue on the merits when the decision mentioned it, compared with decisions that did not. These are associations, not causes, and evidence is recorded per decision, not per issue.
| In the record | Decisions | Granted when present | When absent | Difference |
|---|---|---|---|---|
| Positive nexus opinion | 448 | 96.3% | 41.6% | +54.7 pts |
| Private medical opinion | 586 | 86.3% | 57.4% | +28.9 pts |
| Favorable VA exam | 139 | 95.8% | 73.9% | +21.9 pts |
| Combat service | 48 | 81.8% | 77.7% | +4.2 pts |
| Treating physician opinion | 48 | 75.9% | 78.0% | −2.1 pts |
| Lay statement | 958 | 74.2% | 92.4% | −18.1 pts |
- The Board applied the benefit-of-the-doubt rule (38 CFR 3.102) in 73.0% of the decisions that granted migraine.
- The Board found the veteran's statements credible in 28.0% of grants and 5.1% of denials.
Negative evidence in the record
An unfavorable exam or a negative nexus opinion often sits in the same record as favorable evidence, and the Board weighs them against each other. So these rows show how often migraine was still granted when the record contained the negative item, not that the item helped.
| In the record | Decisions | Granted when present | When absent | Difference |
|---|---|---|---|---|
| Negative nexus opinion | 844 | 72.8% | 89.4% | −16.5 pts |
| Unfavorable VA exam | 1,004 | 75.1% | 92.7% | −17.6 pts |
Recent migraine decisions
Granted
Private physician's opinion found causal and aggravating relationship between PTSD/tinnitus and migraines.; VA treatment records and co-worker corroborated reports of headaches/migraines.; Resolving doubt in Veteran's favor due to conflicting medical opinions.
Secondary to service-connected tinnitus; Approximate balance of evidence; Benefit of the doubt applied
Favorable private medical opinion; Migraines proximately due to tinnitus; Resolved doubt in Veteran's favor
Denied
Persuasively weighs against in-service origin; VA examiner opined less likely than not related to service; Service treatment records negative for headaches
Private medical opinion lacked objective rationale and established causation.; VA medical opinions found migraines less likely than not due to tinnitus.; Service treatment records did not establish a causal link.
No in-service complaints, diagnosis, or treatment for headaches.; VA examiner opined less likely than not related to service or TERA.; Medical literature did not support causative relationship between tinnitus/TERA and headaches.; Lay testimony insufficient for complex medical issues.
Migraine secondary to tinnitus: outcomes by year
| Year | Issues decided | Granted | Denied | Remanded | Other |
|---|---|---|---|---|---|
| 2018 | 79 | 53.2% | 11.4% | 31.6% | 3.8% |
| 2019 | 103 | 48.5% | 6.8% | 43.7% | 1.0% |
| 2020 | 76 | 39.5% | 11.8% | 48.7% | 0.0% |
| 2021 | 84 | 25.0% | 16.7% | 57.1% | 1.2% |
| 2022 | 85 | 29.4% | 9.4% | 58.8% | 2.4% |
| 2023 | 110 | 24.5% | 8.2% | 67.3% | 0.0% |
| 2024 | 210 | 29.0% | 9.0% | 61.0% | 1.0% |
| 2025 | 336 | 33.6% | 8.0% | 58.3% | 0.0% |
| 2026 | 106 | 36.8% | 10.4% | 51.9% | 0.9% |
Each row counts issues (each condition the Board decided), so the shares add up to 100%. Other: dismissed, withdrawn or no clear outcome. Years with fewer than 20 issues are left out.
Why the Board granted or denied migraine
Most common reasons in grants
- Caused by the service-connected disability64
- Current diagnosis established47
- Aggravated by the service-connected disability44
- Service connection established26
- Criteria for secondary service connection met7
- VA examiner: less likely than not related to service7
- Private medical opinion found persuasive3
- Granted secondary to tinnitus3
Most common reasons in denials
- VA examiner: less likely than not related to service41
- No in-service complaints, treatment or diagnosis26
- Service records negative or silent17
- Preponderance of the evidence against the claim7
- No current diagnosis6
- Current diagnosis established2
- Caused by the service-connected disability2
- Aggravated by the service-connected disability2
Numbers are decisions that gave the reason. Reasons are short phrases extracted by AI from each decision; common wordings of the same reason are grouped. Benefit of the doubt is reported above.
Background
What VA needs to grant a secondary claim
Secondary service connection means VA disability benefits for a condition caused or made worse by a disability that is already service connected (38 CFR 3.310). The claim needs three things:
- A current diagnosis of migraine.
- Tinnitus is already service connected.
- Medical evidence linking them (a nexus opinion): migraine was caused by tinnitus (3.310(a)), or was made worse beyond its natural progress by it (aggravation, 3.310(b)).
VA's procedures for these claims are in M21-1 V.ii.2.D. When the evidence for and against is about even, VA must decide in the veteran's favor (38 CFR 3.102).
How VA rates migraine
Once service connection is granted, VA assigns a disability rating from the rating schedule, 38 CFR 4.124a, diagnostic code 8100 (Migraine). The rating is the same whether the condition is service connected directly or as secondary to another disability.
| Rating | Criteria |
|---|---|
| 50% | With very frequent completely prostrating and prolonged attacks productive of severe economic inadaptability |
| 30% | With characteristic prostrating attacks occurring on an average once a month over last several months |
| 10% | With characteristic prostrating attacks averaging one in 2 months over last several months |
| 0% | With less frequent attacks |
- Note (1): There may be an overlap of manifestations of conditions evaluated under the table titled “Evaluation Of Cognitive Impairment And Other Residuals Of TBI Not Otherwise Classified” with manifestations of a comorbid mental or neurologic or other physical disorder that can be separately evaluated under another diagnostic code. In such cases, do not assign more than one evaluation based on the same manifestations. If the manifestations of two or more conditions cannot be clearly separated, assign a single evaluation under whichever set of diagnostic criteria allows the better assessment of overall impaired functioning due to both conditions. However, if the manifestations are clearly separable, assign a separate evaluation for each condition.
- Note (2): Symptoms listed as examples at certain evaluation levels in the table are only examples and are not symptoms that must be present in order to assign a particular evaluation.
- Note (3): “Instrumental activities of daily living” refers to activities other than self-care that are needed for independent living, such as meal preparation, doing housework and other chores, shopping, traveling, doing laundry, being responsible for one's own medications, and using a telephone. These activities are distinguished from “Activities of daily living,” which refers to basic self-care and includes bathing or showering, dressing, eating, getting in or out of bed or a chair, and using the toilet.
- Note (4): The terms “mild,” “moderate,” and “severe” TBI, which may appear in medical records, refer to a classification of TBI made at, or close to, the time of injury rather than to the current level of functioning. This classification does not affect the rating assigned under diagnostic code 8045.
- Note (5): A veteran whose residuals of TBI are rated under a version of § 4.124a, diagnostic code 8045, in effect before October 23, 2008 may request review under diagnostic code 8045, irrespective of whether his or her disability has worsened since the last review. VA will review that veteran's disability rating to determine whether the veteran may be entitled to a higher disability rating under diagnostic code 8045. A request for review pursuant to this note will be treated as a claim for an increased rating for purposes of determining the effective date of an increased rating awarded as a result of such review; however, in no case will the award be effective before October 23, 2008. For the purposes of determining the effective date of an increased rating awarded as a result of such review, VA will apply 38 CFR 3.114, if applicable.
- Note: The ratings under code 8046 apply only when the diagnosis of cerebral arteriosclerosis is substantiated by the entire clinical picture and not solely on findings of retinal arteriosclerosis.
Text of 38 CFR 4.124a as of Feb 27, 2026. Confirm the current text at the source before relying on it.
See all migraine decisions, direct and secondary.
Other conditions secondary to tinnitus
Migraine secondary to other conditions
- Migraine secondary to a psychiatric disorder1,181 decisions · 41.2% granted
- Migraine secondary to PTSD1,732 decisions · 37.1% granted
- Migraine secondary to TBI481 decisions · 35.8% granted
- Migraine secondary to a neck (cervical spine) condition628 decisions · 34.9% granted
- Migraine secondary to hypertension346 decisions · 23.7% granted
- Migraine secondary to a back condition347 decisions · 18.7% granted
See all conditions secondary to tinnitus.
Rules that apply to secondary migraine claims
- 38 CFR 3.310
Secondary service connection and aggravation
Read it in VA Law Explorer - M21-1 V.ii.2.D
Secondary service connection and aggravation of non-service-connected disabilities
Read it in VA Law Explorer - 38 CFR 3.102
Reasonable doubt (benefit of the doubt)
Read it in VA Law Explorer - 38 CFR 4.124a · DC 8100
Schedule of ratings: neurological conditions
Read it in VA Law Explorer - M21-1 V.iii.12.A.3
Migraine: rating criteria, lay evidence of prostration, headache journals
Read it in VA Law Explorer - M21-1 IV.i.3.B.1.b
Reviewing a headache examination report
Read it in VA Law Explorer
Research your migraine case
Narrow by year, judge, evidence or secondary condition, read the decisions, and export a research memo.
How these numbers are calculated
- Counts decisions in which the Board decided a migraine issue claimed as secondary to tinnitus, by the outcome of that issue.
- The primary disability is read from the decision text ("secondary to …") and grouped by name, so spellings such as "PTSD" and "posttraumatic stress disorder" count together.
- Secondary claims also include aggravation of a non-service-connected condition by a service-connected one (38 CFR 3.310(b)).
- The data comes from CaseScribe's AI extraction of public BVA decisions (2017–2026) and can contain errors. It is updated automatically as new decisions are added.
Where this data comes from
- Claim
- Regional office decides
- Veteran appeals
- Board decides
- Granted · Denied · Remanded: back to the regional office
Board of Veterans' Appeals decisions show how VA's highest review body applies 38 CFR and weighs evidence on contested claims.
Each one is an appeal: a regional office decided the claim first, and the veteran appealed. So these rates describe the Board, not a veteran's odds at the regional office, where most claims are decided and whose decisions are not public.
More on what Board decisions can and cannot tell you