Hypothyroidism VA Rating and Diagnostic Code 7903 Criteria

How the December 10, 2017 revision changed hypothyroidism ratings

Veterans researching hypothyroidism claims often encounter pre-2017 guidance referring to a 10% rating for daily thyroid medication (such as levothyroxine) or static 30% and 60% tiers under Diagnostic Code 7903.

Prior to December 10, 2017, DC 7903 rated hypothyroidism at 10% (fatigability, or continuous medication required for control), 30% (fatigability, constipation, and mental sluggishness), 60% (muscular weakness, mental disturbance, and weight gain), and 100% (cold intolerance, muscular weakness, cardiovascular involvement, mental disturbance, bradycardia below 60 beats per minute, and sleepiness).

In the Final Rule published November 2, 2017 (82 FR 50802, effective December 10, 2017), the VA eliminated the ongoing 10%, 30%, and 60% tiers under DC 7903. Once synthetic hormone therapy stabilizes thyroid levels after initial diagnosis, continuing symptoms affect discrete organ systems evaluated under their own body-system diagnostic codes.

Why many claims receive a 0% base rating under DC 7903 after six months

Under Note (2) to DC 7903, the 30% rating for hypothyroidism without myxedema runs for six months after initial diagnosis:

• Claims filed within six months of initial diagnosis: The VA assigns 30% until six months after initial diagnosis, then re-evaluates to rate any lasting residuals.
• Claims filed more than six months after initial diagnosis: Most claimants—including Vietnam-era veterans filing under the Agent Orange presumption—were diagnosed years before filing. Because the six-month post-diagnosis window has passed, the VA assigns 0% under DC 7903 unless myxedema is present, and rates chronic residuals under their body-system codes.

Even at 0%, service connection provides no-cost VA healthcare and medications for hypothyroidism and supports compensable ratings for chronic residuals under Note (2) or secondary conditions under 38 CFR 3.310(a). Veterans holding a 10%, 30%, or 60% rating under DC 7903 before December 10, 2017, remain protected by 38 CFR 3.951(a) against reduction unless medical evidence shows sustained improvement under the historical criteria.

Breakdown of current tiers and rating residuals across body systems

100 percent rating: Hypothyroidism manifesting as myxedema (Note 1)

A 100% rating under Diagnostic Code 7903 requires hypothyroidism manifesting as myxedema. On the VA Thyroid and Parathyroid DBQ, myxedema (crisis or coma) is defined as a rare, life-threatening condition from severe hypothyroidism requiring hospitalization for stabilization and affecting several body systems.

Under Diagnostic Code 7903, myxedema requires four cumulative clinical findings joined by “and”:

1. Cold intolerance
2. Muscular weakness
3. Cardiovascular involvement (including, but not limited to, hypotension, bradycardia, and pericardial effusion)
4. Mental disturbance (including, but not limited to, dementia, slowing of thought, and depression)

Under Note (1), this 100% evaluation continues for six months beyond the date an examining physician determines crisis stabilization. Thereafter, the VA rates residual effects under the affected body systems.

30 percent rating: Hypothyroidism without myxedema (Note 2)

A 30% rating applies to hypothyroidism without myxedema for six months after initial diagnosis while hormone replacement therapy is titrated to normalize TSH and free T4 levels.

Rating chronic residuals of hypothyroidism and myxedema (Notes 1, 2, and 3)

After the six-month window in Note (1) or Note (2) ends, the VA assigns separate ratings for chronic residuals of hypothyroidism or its treatment under each affected body system:

• Mental disorders (38 CFR 4.130): Notes (1) and (2) explicitly list mental disorders. Hypothyroidism frequently causes or aggravates depression, anxiety, cognitive slowing, and memory impairment, rated 0%, 10%, 30%, 50%, 70%, or 100% based on occupational and social impairment. (Under 38 CFR 4.14 anti-pyramiding rules, if you already hold a mental health rating, hypothyroid psychological symptoms are incorporated into that single evaluation.)
• Digestive residuals (38 CFR 4.114): Notes (1) and (2) also cite digestive disorders. Slowed intestinal motility causes chronic constipation, bloating, and abdominal pain, evaluated under the digestive schedule (such as DC 7319, irritable bowel syndrome, at 10%, 20%, or 30% under the criteria effective May 19, 2024).
• Cardiovascular residuals (38 CFR 4.104): Hypothyroidism can cause bradycardia, pericardial effusion, diastolic hypertension (DC 7101), or hyperlipidemia accelerating coronary artery disease (DC 7005), while hormone over-replacement may trigger supraventricular arrhythmias or atrial fibrillation (DC 7010).
• Neurological and musculoskeletal residuals (38 CFR 4.124a and 38 CFR 4.71a): Tissue swelling around peripheral nerves frequently causes carpal tunnel syndrome (DC 8515) or lower-extremity peripheral neuropathy, rated per affected limb, while proximal muscle weakness or joint stiffness is rated under musculoskeletal codes.
• Eye and scar residuals (38 CFR 4.79 and 38 CFR 4.118): Under Note (3) to DC 7903, exophthalmos, corneal ulcer, blurred vision, or diplopia (DC 6090) is separately evaluated under the Eye schedule, and thyroidectomy scars are evaluated under DC 7800 or 7804 (scars).

Agent Orange presumptive service connection for hypothyroidism

In the FY 2021 NDAA (Public Law 116-283, effective January 1, 2021), Congress amended 38 U.S.C. § 1116(a)(2)(K) to add hypothyroidism to the Agent Orange presumptive list. Combined with the expanded herbicide locations in the PACT Act of 2022, veterans with diagnosed hypothyroidism and qualifying service do not need in-service medical records or a nexus letter.

Under 38 U.S.C. § 1116 and the VA Agent Orange eligibility page, presumptive exposure covers active service in:

• Republic of Vietnam (land, inland waterways, and Blue Water Navy vessels within 12 nautical miles) from January 9, 1962, to May 7, 1975.
• Thailand at any U.S. or Royal Thai military base from January 9, 1962, to June 30, 1976.
• Laos (December 1, 1965 – September 30, 1969) and Cambodia at Mimot or Krek, Kampong Cham Province (April 16 – April 30, 1969).
• Guam or American Samoa (January 9, 1962 – July 31, 1980) and Johnston Atoll (January 1, 1972 – September 30, 1977).
• Korean Demilitarized Zone (DMZ) from September 1, 1967, to August 31, 1971, or regular contact with herbicide-contaminated C-123 aircraft.

This presumption applies to hypothyroidism (and Hashimoto’s thyroiditis manifesting as hypothyroidism under Note 1 to DC 7906), not standalone hyperthyroidism unless treatment caused permanent hypothyroidism. Veterans whose claims were denied before 2021 can file a Supplemental Claim (VA Form 20-0995) and may qualify for retroactive effective dates under Nehmer.

Direct, one-year chronic, radiation, and secondary service connection

Veterans without herbicide exposure can establish service connection through four pathways:

1. Direct service connection (38 CFR 3.303): In-service diagnosis of hypothyroidism or elevated TSH, or a nexus linking current hypothyroidism to in-service symptoms or exposures. For veterans with toxic exposure risk activity, 38 U.S.C. § 1168 requires VA to provide a medical examination and opinion in some cases; it does not create a presumption.
2. One-year chronic disease presumption (38 CFR 3.309(a)): “Endocrinopathies” are chronic diseases presumed service connected if manifesting to 10% or more within one year of discharge from 90+ days of active service.
3. Ionizing radiation exposure (38 CFR 3.309(d) and 38 CFR 3.311): Thyroid cancer is presumptive for radiation-risk activities (38 CFR 3.309(d)(2)(ii)), and non-malignant thyroid nodular disease is radiogenic (38 CFR 3.311(b)(2)(xvii)). Post-surgical or post-ablative hypothyroidism from treating those conditions is rated under DC 7903.
4. Secondary service connection (38 CFR 3.310(a)): With a nexus opinion, hypothyroidism may be claimed secondary to radioactive iodine or thyroidectomy for service-connected hyperthyroidism or thyroid cancer; medications for service-connected conditions (lithium or amiodarone); pituitary damage from TBI; or neck radiation. Conversely, service-connected hypothyroidism may support secondary claims for depression, carpal tunnel syndrome, peripheral neuropathy, hypertension, erectile dysfunction, or sleep apnea (including via obesity as an intermediate step under VAOPGCPREC 1-2017).

How the C&P exam and Thyroid DBQ measure your condition

At a C&P exam, the clinician completes the Thyroid and Parathyroid Conditions Disability Benefits Questionnaire (DBQ), verified on the VA Public DBQs page:

1. Section 1 (Diagnosis): Records Hypothyroidism or Thyroiditis, ICD code, and date of diagnosis (determining whether the six-month 30% period is active).
2. Section 2 (Medical History): Documents onset and course (2A), radioactive iodine treatment (2B), other treatment or prophylactic thyroidectomy (2C), and residual endocrine dysfunction (2D).
3. Sections 3B & 3C (Thyroiditis, Symptoms, and Myxedema): Records whether thyroiditis is euthyroid (0% under DC 7906) or manifesting as hypothyroidism (DC 7903), whether the veteran has findings, signs, or symptoms attributable to a hypothyroid condition, and whether the veteran has or ever had myxedema (coma or crisis), whether it has stabilized, and the physician-determined stabilization date.
4. Section 3E (Body Systems Affected): Checks every body system affected by the thyroid condition—Musculoskeletal, Respiratory/ENT, Cardiovascular, Gastrointestinal, Genitourinary, Reproductive, Skin, Eye, Neurological, Mental/Psychological, or Dental and Oral—triggering the appropriate questionnaires so each residual is rated separately under Note (1) or Note (2) to DC 7903.
5. Sections 8, 9 & 10 (Scars, Labs, and Functional Impact): Documents thyroidectomy scars (8B), TSH and free T4 lab results (9), and occupational impact (10A).

Combining ratings and getting accredited help

Separate ratings for hypothyroid residuals combine under 38 CFR 4.25, and paired-limb neuropathy or carpal tunnel ratings receive the 10% bilateral factor under 38 CFR 4.26. Model your combined evaluation with our VA combined rating calculator and estimate retroactive pay with our VA back pay calculator.

If your claim was assigned 0% without evaluating documented residuals, Veterans Service Organizations (VSOs) such as the DAV, VFW, and American Legion provide representation free of charge, while VA-accredited claims agents and attorneys handle appeals. No representative can promise an outcome; verify credentials via the VA Accreditation Search.