Unlike most cancers where veterans must choose a single presumptive basis, thyroid cancer veterans may have access to two separate legal pathways depending on their service history. The key is identifying which applies to you — or whether both apply and which creates the most favorable effective date for your benefits.
The PACT Act added thyroid cancer to VA's presumptive cancer list for veterans with qualifying toxic exposures at covered locations. This primarily covers OEF/OIF/OND veterans who served in Iraq, Afghanistan, and other Southwest Asia locations after August 2, 1990. The PACT Act pathway requires no individual exposure documentation beyond service records placing you at a covered location.
Thyroid cancer is one of the diseases presumed to be caused by ionizing radiation exposure under 38 CFR § 3.309(d). This pathway covers veterans who were involved in defined radiation-risk activities. The thyroid is particularly sensitive to radiation — its iodine-uptake mechanism makes it one of the organs most susceptible to radiation-induced cancer.
PACT Act eligibility for thyroid cancer requires service at one or more covered locations:
Veterans at these locations are presumed to have been exposed to open burn pit smoke, airborne hazards, and other toxic materials — regardless of whether they can identify a specific exposure event or burn pit location. The deployment itself is the qualifying factor.
Note that the Agent Orange presumptive list under 38 CFR § 3.309(e) does not include thyroid cancer as of current regulations (though it does include hypothyroidism, the non-cancer thyroid condition). Vietnam veterans with thyroid cancer should file under the radiation presumptive if they have documented radiation exposure, or explore the direct service connection route with a nexus letter. PACT Act covers post-9/11 service only.
Under 38 CFR § 3.309(d), thyroid cancer is presumptively service-connected for veterans who were involved in defined "radiation-risk activities" during service. These activities include:
Veterans with radiation exposure from these activities do not need individual dosimetry records proving a specific exposure level — the presumption applies based on participation in the covered activity. However, VA may request participation records (such as Defense Threat Reduction Agency records for atomic test veterans) to verify eligibility.
Thyroid cancer during active treatment is rated at 100% under the malignant neoplasm framework. After treatment ends, VA rates residual thyroid dysfunction using specific diagnostic codes:
| DC | Condition | Ratings Available |
|---|---|---|
| 7902 | Hypothyroidism (underactive thyroid) | 0%, 10%, 30%, 60%, 100% |
| 7903 | Hyperthyroidism (overactive thyroid) | 10%, 30%, 60%, 100% |
| 7901 | Thyrotoxicosis (Graves' disease and related) | 10–100% |
Most thyroid cancer veterans who undergo total thyroidectomy will develop hypothyroidism, since the surgery removes the gland responsible for thyroid hormone production. They will require lifelong thyroid hormone replacement therapy (levothyroxine).
| Rating | Criteria |
|---|---|
| 100% | Myxedema coma or other severe manifestations |
| 60% | Cold intolerance, muscular weakness, mental disturbance, weight gain, or fatigability present to a pronounced degree |
| 30% | Fatigability, constipation, weight change, or cold intolerance present to a moderate degree |
| 10% | Fatigability, constipation, weight change, or cold intolerance present to a mild degree |
| 0% | Hypothyroidism controlled by medication without significant symptoms |
An important note on the 0% rating: even a 0% rating for hypothyroidism is valuable because it means the condition is service-connected. If symptoms worsen in the future (medication adjustment needed, symptom burden increases), VA can re-evaluate and increase the rating. A 0% SC rating is far preferable to no service connection at all.
Thyroid cancer active treatment includes:
The six-month evaluation period after treatment ends means that veterans who complete thyroidectomy and RAI therapy in Month 1 are still rated at 100% through Month 7, at which point VA will re-evaluate based on residuals. Do not allow VA to reduce your rating without a proper residuals evaluation.
Total thyroidectomy leaves veterans with permanent medical conditions requiring ongoing management. Key residuals to document and claim:
The most universal residual — removing the thyroid gland means the body can no longer produce thyroid hormone. Veterans will require lifelong levothyroxine supplementation. Even "well-controlled" hypothyroidism on medication can be associated with symptoms of fatigue, cold intolerance, weight changes, and cognitive effects. Document all symptoms thoroughly — VA sometimes rates well-controlled hypothyroidism at 0%, but if any symptoms persist, the rating should be higher.
The parathyroid glands — four tiny glands that regulate calcium — are located adjacent to the thyroid and can be damaged or inadvertently removed during thyroidectomy. Hypoparathyroidism causes chronic hypocalcemia (low blood calcium), which produces muscle cramps, tingling, numbness (particularly in the face, hands, and feet), and in severe cases cardiac arrhythmias and seizures. This is separately ratable under DC 7904 (hypoparathyroidism).
The recurrent laryngeal nerve, which controls vocal cord movement, runs adjacent to the thyroid. It can be damaged during thyroidectomy, causing hoarseness, voice changes, and difficulty with certain vocal tasks. If both nerves are damaged, there can be significant airway compromise. Vocal cord paralysis or paresis is rated under DC 6516 (laryngitis, chronic) or DC 6899/6899 (laryngeal conditions), depending on severity.
The surgical scar from thyroidectomy (typically along the front of the neck) and any tracheal effects from the surgery are potentially ratable. Tracheal stenosis or deviation from surgical scarring is rated under the tracheal diagnostic codes. Skin scars from thyroid surgery are rated under DC 7800–7805 depending on size and characteristics.
The filing process for thyroid cancer follows standard VA disability claim procedures:
List your claim as: "Thyroid cancer — PACT Act presumptive / radiation presumptive" depending on your pathway. Simultaneously list residuals: "Hypothyroidism — secondary to service-connected thyroid cancer/thyroidectomy."
For atomic veterans who need DTRA records, these can be requested through the Defense Threat Reduction Agency's Nuclear Test Personnel Review database. This request can take several weeks — file your claim while the records request is pending; VA can develop the file.
An important distinction for Vietnam-era veterans: while thyroid cancer is not currently on the Agent Orange presumptive list under 38 CFR § 3.309(e), hypothyroidism (the non-cancer thyroid condition) was added to the Agent Orange presumptive list in the 2021 expansion alongside bladder cancer.
This means Vietnam veterans who served in covered locations and have hypothyroidism (without cancer) are entitled to a presumptive rating under 38 CFR § 3.309(e). Veterans who have both a history of thyroid cancer AND residual hypothyroidism should ensure both conditions are properly claimed — the cancer under radiation/PACT pathways and the hypothyroidism as a separate or residual condition.
The practical outcome: a Vietnam veteran who developed hypothyroidism from their service has two potential paths — Agent Orange presumptive for the hypothyroidism itself, or service-connection via hypothyroidism as a residual of any service-connected thyroid condition (if cancer is service-connected, the hypothyroidism that results from treatment is secondary).
Related articles: PACT Act Presumptive Conditions · Agent Orange Presumptive Conditions · Burn Pit Exposure VA Claims · Nexus Letter Cost Guide.
Check Your Thyroid Cancer Eligibility
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Check My Thyroid Cancer Claim →Editorial Standards: Written by Marcus J. Webb, veterans benefits researcher. Verified against 38 CFR § 3.309(d), DC 7902/7903, and PACT Act provisions. Last reviewed: July 2026. Not legal advice — for representation, connect with a VA-accredited attorney.
Thyroid cancer is presumptive under PACT Act and radiation exposure rules. No nexus letter needed — file now.
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