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Window 1: 38 CFR Part 4 Schedules

15 Body Systems

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🫁 1. 15 Body Systems (38 CFR Part 4) All 15 Statutory Body Systems 🦴 § 4.71a Musculoskeletal (Spine, Knees, Shoulders, Amputations) 🧠 § 4.130 Mental Disorders (PTSD, Depression, Anxiety, Bipolar) 🫁 § 4.97 Respiratory (Sleep Apnea, Asthma, Rhinitis, Sinusitis) ⚡ § 4.124a Neurological (Migraines, Radiculopathy, TBI, Neuropathy) 👂 § 4.87 Ear, Tinnitus & Hearing Loss (Speech/Acoustic) 🩺 § 4.114 Digestive System (GERD, IBS, Hiatal Hernia, Liver, Ulcers) 🩹 § 4.118 The Skin (Dermatitis, Eczema, Scars, Chloracne, Psoriasis) ❤️ § 4.104 Cardiovascular (Hypertension, CAD, Heart Attack, Arrhythmia) 🩸 § 4.119 Endocrine (Diabetes Mellitus, Thyroid, Adrenal) 🧪 § 4.115a Genitourinary (Kidney Disease, Renal, Incontinence, Voiding) 👁️ § 4.79 Eye & Visual Acuity (Retinopathy, Glaucoma, Cataracts) 💉 § 4.117 Hemic & Lymphatic (Anemia, Leukemia, Lymphoma, Spleen) 🦠 § 4.88a Infectious Diseases, Immune & Multi-System 🦷 § 4.150 Dental & Oral Conditions (TMJ, Mandible, Teeth) ⚕️ § 4.116 Gynecological System & Breast Disorders

💥 2. In-Service Injury Categories All In-Service Injury Categories 💣 Combat Blast, Improvised Explosives & Concussion (TBI) 🦴 Spinal Trauma, Disc Herniation, Spondylolisthesis & Strain 🦵 Joint Tears (ACL, Meniscus, Labrum, Rotator Cuff Tears) 🩻 Traumatic Bone Fractures, Crush Injuries & Non-Union 🔊 Acoustic Blast Trauma, Artillery & Flight Line Noise 🔥 Thermal Burns, Chemical Burns & Shrapnel Scarring 🪂 Airborne Jumps, Vehicle Rollovers, Physical PT Trauma ⚡ Peripheral Nerve Trauma, Sciatic & Femoral Severance 🛡️ Military Sexual Trauma (MST / Physical & Mental Harm)

🩺 3. Chronic Illness Diagnoses All Chronic Illness Diagnoses 😴 Obstructive & Central Sleep Apnea (DC 6847 - CPAP) 🧠 Post-Traumatic Stress Disorder (DC 9411) 😔 Major Depressive Disorder & Generalized Anxiety (DC 9434) 🤕 Prostrating Migraines & Tension Headaches (DC 8100) 🔥 GERD, Acid Reflux & Hiatal Hernia (DC 7346) 🍽️ Irritable Bowel Syndrome & Colitis (DC 7319) 🩸 Type 2 Diabetes Mellitus & Retinopathy (DC 7913) ❤️ Essential Hypertension & CAD (DC 7101 / DC 7005) 🫁 Bronchial Asthma & COPD (DC 6602 / DC 6604) 👃 Chronic Sinusitis & Allergic Rhinitis (DC 6510/6522) ⚡ Fibromyalgia, Chronic Fatigue & Gulf War Illness (DC 5025) ⚡ Sciatica, Lumbar & Cervical Radiculopathy (DC 8520) 👂 Recurrent Tinnitus & Bilateral Hearing Loss (DC 6260)

☣️ 4. Toxic Exposure (TERA / PACT Act) All Toxic Exposure Presumptive Pathways 🔥 PACT Act: Burn Pits, SWA / Iraq / Afgh / Djibouti (38 USC 1119) 🌿 Agent Orange: Vietnam, Thailand, Guam, Johnston Atoll, C-123 💧 Camp Lejeune Contaminated Water (1953–1987 Presumptive) ☢️ Ionizing Radiation, Atomic Veterans & Enewetak Atoll 🚢 Navy Shipboard Asbestos, Boiler Rooms & Shipyards ✈️ JP-4 / JP-8 Jet Propellant, TCE, Benzene & Degreasers 🛡️ Depleted Uranium, Lead, Heavy Metals & CARC Paint ⚖️ 38 U.S.C. § 1119 Statutory TERA Medical Opinion Mandate

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Window 2: VA M21-1 Manual

Adjudication Procedures

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📘 M21-1 Manual Part All M21-1 Manual Parts Part III: General Claims Development & Evidence (VCAA / STRs) Part IV: Service Connection (Direct, Secondary, Presumptive, TERA) Part V: Rating Job Aids, Bilateral Factor & Reductions Part VIII: Special Claims, TDIU, MST & Radiation Part X: AMA Appeals (Supplemental, HLR & BVA)

⚖️ Key Adjudication Directive All Adjudication Directives Caluza Triangle: 3 Evidentiary Pillars (§ 3.303) Secondary Service Connection & Aggravation (§ 3.310) PACT Act & TERA Presumptive Concessions (38 USC 1119) Duty to Assist: STRs & Federal Records (§ 5103A) C&P Examination Scheduling Threshold (McLendon) Effective Date Assignment & Intent to File (§ 3.400) Combined Rating Math & Bilateral Factor (§ 4.25) TDIU 100% Unemployability Schedular Criteria (§ 4.16) 5-Year, 10-Year, and 20-Year Rating Reductions AMA Decision Reviews (Supplemental / HLR / BVA)

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