How to file a VA Type 2 diabetes claim — Agent Orange Vietnam presumptive (one of the original 1991 presumptives) + extensive downstream cascade

Step 1: Document your Vietnam-era service + qualifying exposure

Type 2 diabetes is presumptive for veterans with documented Agent Orange exposure. VA recognizes exposure for: (a) BOOTS-ON-GROUND VIETNAM (RVN) — January 9, 1962 to May 7, 1975; (b) BLUE WATER NAVY (BWN) — naval service in territorial waters of Vietnam during the period (12 nautical miles from shore, expanded by Blue Water Navy Vietnam Veterans Act of 2019); (c) THAILAND BASES — Royal Thai Air Force bases at U-Tapao, Ubon, Nakhon Phanom, Udorn, Takhli, Korat, Don Muang during the Vietnam era (perimeter security MOS recognized); (d) KOREAN DMZ — service along DMZ April 1, 1968 to August 31, 1971; (e) CAMBODIA + LAOS — service in these countries during the Vietnam era; (f) C-123 AIRCRAFT — flight crew exposure 1969-1986. Document via: DD-214 ports of departure/return, deployment records, unit operational history, OERs/NCOERs mentioning country of assignment, awards/decorations indicating presence in qualifying location. The Blue Water Navy expansion is RECENT — many BWN veterans filed pre-2019 + were denied; refile under current rules.

Reference: https://www.va.gov/disability/eligibility/hazardous-materials-exposure/agent-orange/

Step 2: Get/document your Type 2 diabetes diagnosis (objective lab evidence)

Type 2 diabetes diagnosis requires lab confirmation: (a) A1C ≥ 6.5% on 2+ tests, OR (b) FASTING GLUCOSE ≥ 126 mg/dL on 2+ tests, OR (c) ORAL GLUCOSE TOLERANCE TEST 2-hour value ≥ 200 mg/dL, OR (d) RANDOM GLUCOSE ≥ 200 mg/dL with classic symptoms. VA primary care typically has multiple A1C measurements in your record if you're being treated. CRITICAL DISTINCTION: Type 2 diabetes is presumptive; Type 1 (juvenile-onset) is NOT presumptive under Agent Orange (different etiology). Most adult-onset diabetes is Type 2. If your medical records show "diabetes mellitus" without Type 1/2 distinction, ensure your provider documents Type 2 explicitly. Pre-diabetes / impaired glucose tolerance does NOT qualify for service connection (yet) but should be tracked — many pre-diabetics progress to Type 2 over 5-10 years.

Step 3: File VA Form 21-526EZ — explicit "Agent Orange presumptive" framing

Submit VA Form 21-526EZ stating "Type 2 Diabetes Mellitus, secondary to Agent Orange exposure during Vietnam-era service." Include: DD-214 documenting qualifying service period + location, current Type 2 diabetes diagnosis with A1C/glucose lab values, current medication list (oral antidiabetics like metformin, sulfonylureas, GLP-1 agonists; insulin if applicable). NO MEDICAL NEXUS REQUIRED — Agent Orange presumptive is automatic for documented Vietnam-era service + Type 2 diabetes diagnosis. Initial decision typically 4-6 months. CRITICAL: if you previously filed for diabetes pre-Blue-Water-Navy expansion (pre-2019) and were denied because you were BWN-only, REFILE under current rules. The Blue Water Navy Vietnam Veterans Act of 2019 retroactively recognized BWN exposure.

Step 4: At C&P exam — document treatment regimen + restriction of activities

C&P examiner uses Diabetes DBQ (VA Form 21-0960E-1). Rating depends on TREATMENT-TIER: (a) 10% = MANAGED BY DIET ONLY; (b) 20% = ORAL MEDICATIONS REQUIRED; (c) 40% = INSULIN + ORAL MEDS REQUIRED + RESTRICTED DIET; (d) 60% = INSULIN + RESTRICTED DIET + RESTRICTION OF ACTIVITIES (avoiding strenuous activity due to risk of hypoglycemia or other complications); (e) 100% = ALL OF THE ABOVE + EPISODES OF KETOACIDOSIS OR HYPOGLYCEMIC REACTIONS REQUIRING HOSPITALIZATION. CRITICAL: "RESTRICTION OF ACTIVITIES" is a specific clinical term — your physician must document that strenuous occupational/recreational activities are restricted due to diabetes management. Many veterans rated at 20-40% would qualify for 40-60% with proper "restriction of activities" documentation. Examples: physician note "patient should avoid sustained strenuous physical activity due to risk of severe hypoglycemia"; "patient cannot work in heat or extreme cold due to glycemic instability"; "patient requires frequent breaks for blood glucose monitoring." Bring this language to your provider; most patients can ask + receive this documentation.

Reference: https://www.ecfr.gov/current/title-38/chapter-I/part-4/subpart-B/subject-group-ECFR4d3c3fb70e6d2f0/section-4.119

Step 5: After grant — pursue the 6-condition downstream cascade

Type 2 diabetes is one of the most-cascading SC conditions in the VA system. Once granted, multiple secondary conditions become available under 38 CFR 3.310: (a) PERIPHERAL NEUROPATHY (DC 8520 sciatic, DC 8716 ulnar, DC 8620 femoral, others) — diabetic peripheral neuropathy is recognized; common in diabetes >5 years duration. Rate per limb. (b) DIABETIC RETINOPATHY — visual impairment from microvascular damage. Rated under DC 6080 (impairment of central visual acuity) or DC 6081 (loss of field of vision). (c) DIABETIC NEPHROPATHY / CHRONIC KIDNEY DISEASE — DC 7530 (renal dysfunction). Rated by GFR + proteinuria. (d) DIABETIC ED → SMC-K STACKING — diabetic vascular ED auto-qualifies for SMC-K (~$132/mo bonus). See /api/v1/howto/file-ed-claim.json. (e) DIABETIC FOOT ULCERS — DC 7806 (skin disorders). (f) PERIPHERAL ARTERY DISEASE (PAD) — diabetic vascular pathway, DC 7114 (arteriosclerosis obliterans). The full cascade can compound a 20% diabetes into a 70-90% combined rating + TDIU eligibility. Also: HEART DISEASE secondary to diabetes is recognized (diabetic cardiomyopathy + accelerated atherosclerosis); HYPERTENSION may be secondary to diabetes (kidney pathway). Don't skip secondaries — they are the actual rating value.