Hypothyroidism VA Rating Guide

The VA rates hypothyroidism under diagnostic code 7903 in 38 CFR § 4.119. It works differently from most conditions. One word decides your starting evaluation: myxedema. With it, you start at 100%. Without it, 30%. Both ratings are temporary. After a fixed window, the VA stops rating the thyroid number and rates the leftover effects on other body systems. This guide explains the split, the two initial evaluations and their limits, how the VA rates residuals after that, the service-connection theories, and the Agent Orange presumptive added in 2021.

What Hypothyroidism Is

Hypothyroidism is an underactive thyroid: the gland does not make enough thyroid hormone, which slows the body down. Common effects are fatigue, weight gain, cold intolerance, dry skin, constipation, slowed thinking, and depressed mood. It sits in the endocrine system and is rated under DC 7903. Most people manage it with daily replacement hormone (such as levothyroxine).

The current 7903 criteria took effect December 10, 2017. Claims or rating periods before that date are evaluated under the older multi-step version of 7903 (which had 100/60/30/10 levels), so a staged rating with an earlier effective date can mix the two. Everything below describes the current criteria.

The Myxedema Split (the Part Most People Miss)

Under current 7903 there are only two starting points, and which one applies depends entirely on whether the hypothyroidism reached myxedema.

What myxedema means here: the regulation reserves the 100% level for hypothyroidism manifesting as myxedema, described as cold intolerance, muscular weakness, cardiovascular involvement (including hypotension, bradycardia, and pericardial effusion), and mental disturbance (including dementia, slowing of thought, and depression). In practice this is the severe, crisis-level form that required stabilization. It cannot be established by a lay statement alone, the record has to show it.

Hypothyroidism that did not reach myxedema starts at 30%. The difference is not about how bad the long-term symptoms feel, two veterans can end up with the exact same residuals later. The split only controls the starting evaluation and how long it lasts.

How the VA Rates Hypothyroidism (DC 7903)

100%Hypothyroidism manifesting as myxedema

Cold intolerance, muscular weakness, cardiovascular involvement (hypotension, bradycardia, pericardial effusion), and mental disturbance (dementia, slowing of thought, depression). This evaluation continues for 6 months beyond the date an examining physician determines the crisis is stabilized. After that, residuals are rated.

30%Hypothyroidism without myxedema

The starting evaluation when myxedema is not shown. It continues for 6 months after the initial diagnosis. After that, residuals are rated.

Both starting evaluations are temporary by design. The clocks are different:

Type	Initial rating	How long it runs	Then
With myxedema	100%	6 months beyond crisis stabilization	rate residuals
Without myxedema	30%	6 months after initial diagnosis	rate residuals

Note on eye involvement: if eye problems such as exophthalmos, corneal ulcer, blurred vision, or diplopia are also present due to the thyroid disease, 38 CFR § 4.119 directs the VA to evaluate them separately under the appropriate eye diagnostic code, in addition to the thyroid rating.

After the 6 Months: Residuals

Once the initial window closes, the thyroid number is no longer the rating. The VA evaluates the residuals, the lasting effects of the disease or its treatment, under the most appropriate diagnostic code in each affected body system. Hypothyroidism can leave effects across many systems:

Cardiovascular: bradycardia, other heart involvement.
Mental health: depression, cognitive slowing.
Digestive: constipation and related effects.
Eyes: the involvement noted above, rated separately.
Skin, muscular, neurological: documented effects rated under their own codes.

Because the rating shifts to residuals, the long-run evaluation can be higher or lower than the starting number, and it can be 0% if no compensable residual is documented. Unlike the older (pre-2017) version of 7903, the current criteria do not carry an automatic minimum for taking continuous medication, the result depends on what residuals the record shows.

Go deeper: open the full DC 7903 breakdown

The grant, denial, and remand picture from published BVA decisions
Secondary condition map
What the C&P exam measures

See the full DC 7903 breakdown →

How Hypothyroidism Gets Service Connected

Several theories can apply. They are routes to service connection, not a ranking:

Direct (38 CFR § 3.303): diagnosed or began in service, with a current diagnosis and a medical link to service.
Secondary (38 CFR § 3.310(a)): a service-connected disability caused the hypothyroidism.
Secondary aggravation (38 CFR § 3.310(b)): a non-service-connected hypothyroidism is made worse, beyond its natural progression, by a service-connected disability.
In-service aggravation (38 CFR § 3.306): the condition pre-existed service and service permanently worsened it beyond natural progression.
Section 1151 (38 U.S.C. § 1151): VA medical care caused the disability through negligence or a similar fault. A medication's ordinary, expected side effect is not a 1151 basis.
Toxic exposure (TERA / PACT Act): evaluated as a toxic-exposure risk activity where applicable.
Presumptive, Agent Orange (38 CFR § 3.309(e)): see the next section.

The Agent Orange Presumptive

Hypothyroidism was added to the herbicide (Agent Orange) presumptive list under 38 CFR § 3.309(e) by the FY2021 National Defense Authorization Act (Public Law 116-283), effective January 1, 2021. For a veteran with qualifying herbicide exposure, a presumptive grant does not require proving the medical link, exposure plus the diagnosed condition is enough.

Earlier effective dates can apply. When a condition is added by a liberalizing law, 38 CFR § 3.114 can allow an effective date up to one year earlier than the claim, if the evidence shows the condition met the criteria during that period. Veterans granted hypothyroidism on the Agent Orange presumptive who were diagnosed before January 1, 2021 may want to check the effective date assigned on their rating decision against this rule.

See the Agent Orange presumptive reference for the full condition list and exposure locations.

What the Rating Turns On

For hypothyroidism the outcome usually turns on a few specific records:

Proof of crisis stabilization and its date. The 100% level turns on medical evidence that the hypothyroidism reached myxedema and was stabilized, and on the date a physician determined that. Without those records (often from a private hospital), the 100% window cannot be established and only the 30% / residual path applies.
The thyroid and parathyroid DBQ. The questions on signs and symptoms and on residuals (sections 3C and 3E on the VA form) are where the residual picture is documented. A reflex or physical-exam note is not a substitute for the DBQ that covers a specific residual.
Residual documentation by the right provider. A medical residual in another system (for example a mental-health residual) generally needs that specialty's examination. A thyroid examiner cannot complete a mental-health evaluation.
For the presumptive path: qualifying herbicide exposure plus the hypothyroidism diagnosis.

These are the facts the rating depends on, described from published criteria and decisions. They are not advice about any individual claim.

What Published BVA Decisions Show

From the RateMyVSO index of published Board of Veterans' Appeals decisions, 1,985 issues are tagged to DC 7903 (hypothyroidism). Of the 1,546 that were decided on the merits (grants plus denials), approximately 38% were granted and the rest denied. A further 246 were remanded for more development and the remainder dismissed.

How to read this: these are appeals that reached the Board, which skews toward harder, previously-denied cases, so the figure is not a base rate for all hypothyroidism claims. It is a descriptive aggregate of decided Board appeals, not a prediction of any individual claim. Source: RateMyVSO BVA index, DC 7903.

Frequently Asked Questions

Why did I only get 30% when my buddy got 100% for the same thing?

The 100% level is reserved for hypothyroidism manifesting as myxedema, the severe crisis form that required stabilization and is shown in the medical record. Without myxedema, the starting evaluation is 30%. Both are temporary and convert to a residual-based rating after their 6-month window.

Does the 100% rating last forever?

No. The 100% evaluation continues for 6 months beyond the date a physician determines the crisis is stabilized. After that the VA rates the residuals across the affected body systems.

I take medication every day. Isn't that an automatic rating?

Under the older (pre-December 10, 2017) version of 7903, continuous medication carried a minimum 10%. The current criteria do not, after the initial window the rating is based on documented residuals, which can be higher, lower, or 0%.

I was diagnosed years ago. Can I still get the 100% or 30%?

Those initial evaluations attach to the period right after diagnosis or stabilization. If diagnosis and stabilization happened long before the claim, that window has already closed for effective-date purposes, and the VA generally rates only the residuals. Effective dates are governed by 38 CFR 3.400.

Can hypothyroidism be service connected through Agent Orange?

Yes. It was added to the herbicide presumptive list effective January 1, 2021. With qualifying exposure, the presumptive path does not require proving the medical link. Veterans diagnosed before 2021 may be eligible for an earlier effective date under the liberalizing-law rule (38 CFR 3.114).

Related Tools and Guides

DC 7903, hypothyroidism

The code page with rating levels and BVA data.

Agent Orange Presumptive

The full herbicide condition list and exposure locations.

Service Connection

The direct, secondary, and aggravation theories explained.

DBQ Guide

How the exam form documents signs, symptoms, and residuals.

VA Math Calculator

Combine residual ratings across body systems.

Effective Dates

How liberalizing-law and date-of-claim rules set back pay.

Sources: 38 CFR 4.119, endocrine system (DC 7903) · Cornell LII, 38 CFR 4.119 · 38 CFR 3.309(e), herbicide presumptives · RateMyVSO BVA index (DC 7903). Endocrine criteria effective December 10, 2017. Agent Orange presumptive effective January 1, 2021. Educational only, not legal advice, and not a prediction of any individual claim. Rating criteria change. Confirm current details in 38 CFR 4.119. For help with your claim, find a VA-accredited representative.