Why this listing is powerful
Large or dissecting aortic aneurysms can end life—or at least employability—without warning. Listing 4.10 transforms objective imaging measurements (CT, MR angiography, echocardiography) into a Step 3 allowance, sidestepping vocational hypotheticals. If you gather diameter data, dissection reports, and evidence of uncontrolled expansion despite optimal care, the ALJ has little room to deny.
Full regulatory text
“4.10 Aneurysm of the aorta or of its major branches. An aneurysm (including aortic dissection) demonstrated by appropriate medically acceptable imaging and not controlled with prescribed treatment, with one of the following:
A. Evidence of persistent aortic dissection; or
B. An aneurysm documented for at least 3 months with a measured diameter of 6.0 cm or greater; or
C. An aneurysm documented for at least 3 months with a measured diameter of 5.0 cm or greater and one of the following complications:
1. Compression of adjacent organs, or
2. Evidence of renal, visceral, or peripheral ischemia.”
(See § 4.00E11 for acceptable imaging modalities and measurement standards.)
Regulatory elements distilled
- Documented by imaging
- CT angiography, MR angiography, trans-esophageal echo (TEE), or formal ultrasound with calibrated calipers
- “Not controlled after prescribed treatment”
- Either surgery / endovascular repair is medically deferred (comorbidities) or aneurysm continues to enlarge despite medical therapy
- Path A — Persistent dissection
- Flap visible on serial imaging; ongoing false-lumen flow
- Path B — Diameter ≥ 6 cm for ≥ 3 months
- Path C — Diameter ≥ 5 cm for ≥ 3 months plus compression or ischemia
- Compression = dysphagia, hoarseness, SVC syndrome with correlating CT
- Ischemia = renal insufficiency, mesenteric angina, lower-limb claudication attributed to aneurysm
Building the winning file
- Collect serial imaging
- At least two dated studies three months apart documenting size (e.g., CT: 5.2 cm → 5.4 cm).
- Ensure radiologist measures outer-wall to outer-wall at the same level.
- Prove lack of control
- Vascular-surgery note stating patient is “high-risk for repair” or “monitoring until 6.5 cm.”
- Medication list: beta-blocker/ARB for rate-pressure control.
- Highlight complications
- Serum creatinine rise post-dissection; duplex showing renal artery flow reduction.
- GI notes describing post-prandial pain (mesenteric ischemia).
- Add functional evidence
- Treating physician letter limiting lifting to < 10 lb and prohibiting Valsalva (coughing, straining) → supports “not controlled” and Step 5 fallback if needed.
- Address emergencies
- Any ER visit for chest/back “tearing” pain with CT confirmation should be flagged; recurrent acute episodes bolster “persistent dissection.”
- Plan for DDS skepticism
- Submit full DICOM report, not summary; annotate diameter in millimetres & centimetres.
- Explain in cover letter that elective repair is postponed because of comorbid CHF, COPD, etc.—avoids “failure to follow treatment” argument.
Professional bottom line
Listing 4.10 hinges on clear, numerical imaging findings and the inability to control the aneurysm. Supply serial CT/MRA reports, document any dissection or ischemic sequelae, and tie physician recommendations to SSA’s “not controlled” language. Do that, and your claimant should prevail at Step 3—well before a vocational expert enters the hearing room.
Under Listing 4.10, a Social Security Disability Lawyer can help compile serial CT or MRI imaging, vascular surgery notes, and complication records to establish aneurysm size, progression, and lack of control despite treatment. Clear documentation of dissection, diameter thresholds, or compression-related ischemia is essential to meeting SSA’s strict criteria and securing a Step 3 disability finding without vocational analysis.