The Hashimoto’s VA disability rating starts under Diagnostic Code 7906 for thyroiditis, but because Hashimoto’s almost always progresses to hypothyroidism, most veterans are actually rated under Diagnostic Code 7903. Under the current version of DC 7903, in effect since December 10, 2017, hypothyroidism itself pays either 30% for six months after diagnosis or 100% for six months after a myxedema crisis stabilizes. After that six-month window closes, compensation depends entirely on rating each residual symptom (depression, heart disease, fatigue, cognitive problems, and so on) under the diagnostic code for the body system it affects.
That framework is the single most important thing to understand about a Hashimoto’s claim: the thyroid diagnosis itself is a short-term rating, and long-term compensation lives in the residuals.
How the VA Classifies Hashimoto’s
Hashimoto’s thyroiditis sits at 38 CFR § 4.119 under Diagnostic Code 7906. If the thyroid is still working normally (a euthyroid state), the condition carries a 0% noncompensable rating under DC 7906. Once the autoimmune process damages enough thyroid tissue to cause hypothyroidism, the rating shifts to DC 7903. If Hashimoto’s produces hyperthyroidism instead, it is rated under DC 7900.
Having a Hashimoto’s diagnosis does not automatically mean you have hypothyroidism, but because the disease typically destroys thyroid tissue over time, the vast majority of claims end up evaluated under DC 7903.
The Current DC 7903 Rating Schedule
The VA amended DC 7903 effective December 10, 2017, at 82 FR 50804. The old permanent scale of 10/30/60/100 was replaced with two temporary ratings:
- 100% for hypothyroidism with myxedema, meaning cold intolerance, muscular weakness, cardiovascular involvement (hypotension, bradycardia, pericardial effusion), and mental disturbance including dementia, slowing of thought, and depression. The 100% rating continues for six months after a physician determines the crisis has stabilized. After that, residuals are rated under the appropriate body system codes.
- 30% for hypothyroidism without myxedema, assigned for six months after initial diagnosis. After that, residuals of the disease or its treatment are rated under the diagnostic codes for the affected body systems.
Eye involvement from thyroid disease (exophthalmos, corneal ulcers, blurred vision, diplopia) is evaluated separately under eye diagnostic codes regardless of the hypothyroidism rating.
The Pre-2017 Schedule
Claims that were filed or pending before December 10, 2017 may still be evaluated under the prior version of DC 7903, which assigned permanent ratings:
- 10% for fatigability, or continuous medication required for control.
- 30% for fatigability, constipation, and mental sluggishness.
- 60% for muscular weakness, mental disturbance, and weight gain.
- 100% for cold intolerance, muscular weakness, cardiovascular involvement, mental disturbance (dementia, slowing of thought, depression), bradycardia under 60 bpm, and sleepiness.
Veterans with older claims may benefit from the prior permanent-rating structure, and Board of Veterans’ Appeals decisions have applied either version depending on when the claim was filed.
What Happens After the Six-Month Rating Expires
Under the current rules, the VA will not keep rating hypothyroidism on its own after the initial six months. Long-term compensation depends on documenting the residual effects of the disease and getting each one rated under its own body system’s diagnostic code. The ratings then combine to form the overall disability percentage.
Residual conditions that veterans have successfully claimed as connected to hypothyroidism include:
- Mental health: depression, cognitive decline, memory problems, difficulty concentrating.
- Cardiovascular: heart disease, bradycardia, hypotension, high cholesterol.
- Musculoskeletal and neurological: chronic fatigue, joint pain, muscle weakness, mobility limitations.
- Other: weight gain, constipation, cold intolerance, skin and hair changes.
In a 2023 BVA decision, a veteran received a 70% rating for depressive disorder evaluated as a residual of hypothyroidism under the general rating formula for mental disorders, after the Board found her condition caused occupational and social impairment with deficiencies in most areas, including work, family relations, judgment, thinking, and mood. That is the pattern to follow: identify every residual symptom, document it thoroughly, and claim it under the correct body system code.
Establishing Service Connection
Direct Service Connection
The standard three-element test applies: a current diagnosis, an in-service event or exposure, and a medical nexus opinion linking the two. A nexus letter must typically state that the condition is “at least as likely as not” connected to service. In a 2025 BVA decision granting service connection, the Board accepted a medical opinion stating the veteran’s Hashimoto’s was “at least likely as not caused by or result of military service” and was “aggravated by the stressors of service.”
If Hashimoto’s was diagnosed before service, the claim becomes an aggravation claim: you must show the condition worsened beyond its natural progression during service. When the condition was noted on entrance exams, the VA can find any worsening was part of the natural course of the disease, but the VA must produce “clear and unmistakable evidence” to support that conclusion.
Agent Orange Presumption
Hypothyroidism was added to the list of conditions presumptively associated with herbicide agent (Agent Orange) exposure by the William M. (Mac) Thornberry National Defense Authorization Act for Fiscal Year 2021, effective January 1, 2021. Veterans who served in qualifying locations, including the Republic of Vietnam, the Korean DMZ during specified timeframes, Thailand, Laos, Cambodia, Guam, American Samoa, and Johnston Atoll, do not need to prove a direct nexus. They need only show the diagnosis and qualifying service.
The statute names “hypothyroidism” specifically, not Hashimoto’s thyroiditis. Because the VA rates Hashimoto’s under the hypothyroidism code when it causes hypothyroid symptoms, veterans with Hashimoto’s-caused hypothyroidism generally fall within the presumption.
Secondary Service Connection
Hashimoto’s or hypothyroidism can also be claimed as secondary to an already service-connected condition. That includes claims based on medications prescribed for service-connected disabilities that are known to affect thyroid function: lithium (mental health conditions), amiodarone (heart disease), and carbamazepine (epilepsy). PTSD has been raised as a secondary basis, though the evidence is mixed; a 2014 VA examination in one case stated that “the medical literature does not support a causal or proximate relationship between PTSD and hypothyroidism,” and a 2024 Mendelian randomization study found a causal link between PTSD and Graves’ disease but not autoimmune thyroiditis specifically.
Exposure Theories That Don’t Qualify
Several exposure theories do not currently provide a presumption for thyroid disease, and veterans should know this before framing a claim around them:
- PACT Act (burn pits and particulate matter): Hashimoto’s and hypothyroidism are not on the PACT Act’s presumptive list. A BVA decision confirmed that “hypothyroidism (and thyroid cancer) is not among those diseases listed” in the PACT Act. Direct service connection is still possible, and the PACT Act does require the VA to concede toxic exposure for covered veterans, which can support a direct claim.
- Camp Lejeune water contamination: Thyroid conditions are not among the diseases presumptively linked to Camp Lejeune water under 38 CFR § 3.309(f). Multiple BVA decisions have denied service connection for hypothyroidism and Hashimoto’s on that theory, with VA examiners finding no established link between the contaminants (TCE, PCE, benzene, vinyl chloride) and thyroid disease.
- Gulf War undiagnosed illness: 38 CFR § 3.317 covers undiagnosed illnesses and medically unexplained chronic multisymptom illnesses. Because Hashimoto’s is a diagnosed autoimmune disease, it falls outside that framework. A BVA decision put it plainly: having a hypothyroidism diagnosis “effectively moots consideration of an undiagnosed illness theory of service connection.”
The Compensation and Pension Exam
The VA uses a standardized Thyroid and Parathyroid Disability Benefits Questionnaire (the current version, updated April 2025, is designated ~v25_1). The examiner reviews the claims file and evaluates medical history, current thyroid function, pulse, blood pressure, and deep tendon reflexes, and specifically checks for myxedema, neck enlargement, and systemic effects across the musculoskeletal, cardiovascular, gastrointestinal, neurological, dermatological, eye, and mental health systems. Where complications affect other body systems, the form directs the examiner to complete additional system-specific questionnaires.
The examiner also reviews TSH, Free T4, Free T3, thyroid antibodies, and relevant imaging, and answers questions about how the condition affects the veteran’s ability to sit, walk, stand, and lift.
Before the exam, gather recent lab results and treatment records. During the exam, describe how symptoms affect daily functioning and work, and make sure to raise every secondary complication (cardiac symptoms, depression, fatigue, cognitive difficulties) so the examiner has to address them. Attendance is mandatory; missing the exam can result in denial.
Why Claims Get Denied
The most common denial reason is a missing medical nexus, particularly for exposure-based claims that lack a presumptive pathway. Veterans whose condition predated service often see denials on the theory that the disease was not aggravated beyond its natural progression, usually supported by stable in-service hormone levels.
The temporary structure of the current DC 7903 creates its own trap. Veterans who don’t document and claim residual conditions can lose compensation when the six-month rating expires. Inadequate documentation of symptoms and functional limitations at the C&P exam produces lower ratings, and skipping the exam produces denials outright.
A 2025 BVA remand highlighted another problem: internally inconsistent VA examinations that found “normal” thyroid function and “hypothyroidism” at once while ignoring reported fatigue, weight gain, and cognitive difficulty. The Board found the exams inadequate and ordered a new evaluation with a different clinician.
Appealing a Denial or Low Rating
You have one year from the date of the VA’s decision letter to act. Three routes are available:
- Supplemental Claim (VA Form 20-0995), when new and relevant evidence such as an updated nexus letter, additional medical records, or new lab results can be submitted.
- Higher-Level Review, when you believe the VA made a factual or legal error. No new evidence is submitted; a more senior reviewer looks at the existing record.
- Board of Veterans’ Appeals, with a choice of direct review, a hearing, or submission of additional evidence.
What tends to work: a strong nexus opinion tied to a specific in-service exposure or event; challenging factual errors in the examiner’s report; and invoking the benefit-of-the-doubt doctrine under 38 U.S.C. § 5107(b), which requires the VA to resolve evenly balanced evidence in the veteran’s favor. In a 2025 appeal, the Board granted service connection after finding that opposing medical opinions created an “approximate balance” of evidence, triggering the benefit-of-the-doubt rule.
Pyramiding and Separate Ratings
The anti-pyramiding rule at 38 CFR § 4.14 forbids rating the same symptom under multiple diagnostic codes. For Hashimoto’s veterans, this comes up most often with depression. If you already hold a separate rating for depression and then receive a higher Hashimoto’s rating that folds in “mental disturbance,” the VA will discontinue the standalone depression rating. In one BVA case, the Board granted a 60% Hashimoto’s rating that encompassed the veteran’s depression and ordered the prior 30% depression rating discontinued.
Separate ratings are still available for conditions with distinct manifestations that don’t overlap. Once the six-month hypothyroidism rating ends, pursuing individual ratings for each residual under its own body system code isn’t just allowed. It’s the only way to keep compensation in place.
Total Disability Based on Individual Unemployability
If Hashimoto’s or its complications keep you from substantially gainful employment, you may qualify for Total Disability based on Individual Unemployability (TDIU), which pays at the 100% rate regardless of your combined rating. Two pathways exist under 38 CFR § 4.16:
- Schedular TDIU under § 4.16(a): one service-connected condition rated at 60% or higher, or two or more conditions combining to 70% with at least one at 40%.
- Extraschedular TDIU under § 4.16(b): available when you don’t meet the schedular thresholds but can show your service-connected conditions prevent substantially gainful employment.
Because the current rating system does not offer a permanent standalone rating above 30% for hypothyroidism (or 100% temporarily for myxedema), TDIU is often the practical route to full compensation for veterans whose thyroid-related disabilities, taken together with the mental health, cardiovascular, and musculoskeletal residuals, keep them out of work.