Types of SSDI Claims

Reviewed by Faye Underwood (FU), Editor-in-Chief — Social Security Disability Practice. Updated May 2026.

SSDI does not limit eligibility to a fixed list of conditions. Any medically determinable physical or mental impairment can qualify if it prevents substantial gainful activity for at least 12 months. However, SSA maintains a Listing of Impairments (“Blue Book”) that defines specific clinical criteria for major condition categories. Meeting a Blue Book listing creates a presumption of disability at step 3 of the five-step evaluation, bypassing the need to show inability to perform specific jobs. Not meeting a listing does not mean denial — it means SSA proceeds to steps 4 and 5, evaluating your residual functional capacity against available work.

Musculoskeletal Disorders

The most common basis for SSDI claims, musculoskeletal disorders include back and spine conditions (degenerative disc disease, herniated discs, spinal stenosis, failed back surgery syndrome), arthritis, joint replacements that limit function, and soft tissue disorders. SSA’s Blue Book listing 1.00 covers the musculoskeletal system.

The critical test is functional limitation: you must show the condition prevents all substantial gainful work, not just your former job. A claimant with severe lumbar stenosis who cannot sit for more than 30 minutes or stand for more than 20 minutes faces a strong case for limitation. A claimant who can work a sedentary desk job despite chronic back pain faces a harder evaluation. Objective imaging, physician functional capacity assessments, and treatment history are the key evidence categories.

Cardiovascular Conditions

Heart conditions covered under SSA’s Blue Book listing 4.00 include chronic heart failure, ischemic heart disease, recurrent arrhythmias, symptomatic congenital heart disease, and peripheral arterial disease. Qualifying typically requires documented cardiac testing results — echocardiograms, stress tests, catheterization reports — that meet the specific clinical criteria in the listing.

Cardiovascular claims often involve the interplay between the cardiac condition and other impairments. A claimant with heart failure and diabetes may qualify under a combined impairment analysis even if neither condition alone meets a listing. SSA is required to consider the combined effect of all medically determinable impairments.

Mental Health Conditions

Mental health conditions are the second most common basis for SSDI claims after musculoskeletal disorders. Blue Book listing 12.00 covers a wide range of conditions: depressive, bipolar, and related disorders; anxiety and obsessive-compulsive disorders; trauma and stressor-related disorders (including PTSD); psychotic disorders including schizophrenia; neurocognitive disorders; and intellectual disorders.

Mental health claims require documented treatment history (psychiatrist or psychologist notes, medication records, hospitalization records where applicable) and evidence of functional limitations in four areas that SSA evaluates: understanding and applying information, interacting with others, concentrating and maintaining pace, and adapting to changes in the work setting. Applicants with limited treatment history face a harder evaluation because SSA has less objective evidence to assess severity.

Neurological Conditions

Blue Book listing 11.00 covers neurological impairments including epilepsy and seizure disorders, multiple sclerosis, Parkinson’s disease, amyotrophic lateral sclerosis (ALS), cerebral palsy, traumatic brain injury, and stroke-related impairments. ALS is a Compassionate Allowances condition and is approved almost immediately upon filing.

Neurological claims often involve a combination of physical and cognitive limitations. MS, for example, may cause both motor impairment and cognitive fog that limit both physical and sedentary work capacity. Comprehensive neurological evaluations and imaging (MRI findings, EEG records for seizure disorders) are essential documentation.

Cancer

Blue Book listing 13.00 covers malignant neoplastic diseases. Many cancers — particularly at advanced stages — qualify under SSA’s Compassionate Allowances program for expedited approval. Compassionate Allowances cases can be approved within weeks rather than the typical months-long initial review period. The program includes most Stage IV metastatic cancers, pancreatic cancer at any stage, inflammatory breast cancer, and many rare or aggressive cancers.

For cancers in remission or early-stage cancers being treated, eligibility depends on the residual functional limitations from the disease or its treatment. Chemotherapy side effects (fatigue, neuropathy, immunosuppression) and radiation effects are evaluated as part of the impairment analysis.

Chronic Respiratory Conditions

Blue Book listing 3.00 covers respiratory disorders including COPD, asthma, cystic fibrosis, pulmonary fibrosis, and lung transplant status. Qualification typically requires objective pulmonary function test results meeting specific forced expiratory volume (FEV1) or diffusing capacity thresholds. Spirometry and DLCO testing are therefore critical components of the medical record for respiratory claims.

Smoking history is frequently an issue in COPD claims. SSA cannot deny benefits solely on the basis that the claimant’s condition was self-caused; functional limitation is the standard, not causation.

Chronic Pain and Fatigue Syndromes

Fibromyalgia, chronic fatigue syndrome (CFS/ME), and related conditions present challenges in SSDI claims because they are diagnosed primarily through clinical evaluation rather than objective laboratory tests or imaging. SSA recognizes fibromyalgia as a medically determinable impairment when it is documented with a treating physician’s longitudinal records showing consistent findings consistent with a diagnosis under established medical criteria (ACR diagnostic criteria).

For these conditions, the quality of the medical record is particularly important. Frequent visits with a treating physician who documents functional limitations in detail, objective pain assessments, and records of treatment attempts (medication, physical therapy, sleep studies) build the evidentiary foundation. These claims are more likely to require ALJ hearing representation to succeed, because the subjective nature of the impairment gives SSA examiner discretion that an ALJ can override with proper argumentation and vocational expert cross-examination.

Use the SSDI benefit calculator to estimate your monthly benefit, or see the full eligibility guide for more detail on how SSA evaluates each condition category.