Aggregated by Superinsight from public-domain sources, as of 2026-07-02.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.01
14.01 Category of Impairments, Immune System Disorders.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.02
14.02 Systemic lupus erythematosus. As described in 14.00D1. With:
A. Involvement of two or more organs/body systems, with:
One of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
B. Repeated manifestations of SLE, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.03
14.03 Systemic vasculitis. As described in 14.00D2. With:
A. Involvement of two or more organs/body systems, with:
One of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
B. Repeated manifestations of systemic vasculitis, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.04
14.04 Systemic sclerosis (scleroderma). As described in 14.00D3. With:
A. Involvement of two or more organs/body systems, with:
One of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
B. One of the following:
a. A documented medical need (see 14.00C6) for a walker, bilateral canes, or bilateral crutches (see 1.00C6d) or a wheeled and seated mobility device involving the use of both hands (see 1.00C6e(i)); or
b. An inability to use one upper extremity to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7), and a documented medical need (see 14.00C6) for a one-handed, hand-held assistive device (see 1.00C6d) that requires the use of the other upper extremity or a wheeled and seated mobility device involving the use of one hand (see 1.00C6e(ii)); or
Finger contractures or fixed deformity in both hands and medical documentation of an inability to use both upper extremities to the extent that neither can be used to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7); or
Atrophy with irreversible damage in one or both lower extremities and medical documentation of at least one of the following:
a. A documented medical need (see 14.00C6) for a walker, bilateral canes, or bilateral crutches (see 1.00C6d) or a wheeled and seated mobility device involving the use of both hands (see 1.00C6e(i)); or
b. An inability to use one upper extremity to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7), and a documented medical need (see 14.00C6) for a one-handed, hand-held assistive device (see 1.00C6d) that requires the use of the other upper extremity or a wheeled and seated mobility device involving the use of one hand (see 1.00C6e(ii)); or
C. Raynaud's phenomenon, characterized by:
Gangrene involving at least two extremities; or
Ischemia with ulcerations of toes or fingers and medical documentation of at least one of the following:
a. A documented medical need (see 14.00C6) for a walker, bilateral canes, or bilateral crutches (see 1.00C6d) or a wheeled and seated mobility device involving the use of both hands (see 1.00C6e(i)); or
b. An inability to use one upper extremity to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7), and a documented medical need (see 14.00C6) for a one-handed, hand-held assistive device (see 1.00C6d) that requires the use of the other upper extremity or a wheeled and seated mobility device involving the use of one hand (see 1.00C6e(ii)); or
c. An inability to use both upper extremities to the extent that neither can be used to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7); or
D. Repeated manifestations of systemic sclerosis (scleroderma), with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.05
14.05 Polymyositis and dermatomyositis. As described in 14.00D4. With:
A. Proximal limb-girdle (pelvic or shoulder) muscle weakness and medical documentation of at least one of the following:
A documented medical need (see 14.00C6) for a walker, bilateral canes, or bilateral crutches (see 1.00C6d) or a wheeled and seated mobility device involving the use of both hands (see 1.00C6e(i)); or
An inability to use one upper extremity to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7), and a documented medical need (see 14.00C6) for a one-handed, hand-held assistive device (see 1.00C6d) that requires the use of the other upper extremity or a wheeled and seated mobility device involving the use of one hand (see 1.00C6e(ii)); or
An inability to use both upper extremities to the extent that neither can be used to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7); or
B. Impaired swallowing (dysphagia) with aspiration due to muscle weakness.
or
C. Impaired respiration due to intercostal and diaphragmatic muscle weakness.
or
D. Diffuse calcinosis with limitation of joint mobility or intestinal motility.
or
E. Repeated manifestations of polymyositis or dermatomyositis, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.06
14.06 Undifferentiated and mixed connective tissue disease. As described in 14.00D5. With:
A. Involvement of two or more organs/body systems, with:
One of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
B. Repeated manifestations of undifferentiated or mixed connective tissue disease, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.07
14.07 Immune deficiency disorders, excluding HIV infection. As described in 14.00E. With:
A. One or more of the following infections. The infection(s) must either be resistant to treatment or require hospitalization or intravenous treatment three or more times in a 12-month period.
Sepsis; or
Meningitis; or
Pneumonia; or
Septic arthritis; or
Endocarditis; or
Sinusitis documented by appropriate medically acceptable imaging.
or
B. Stem cell transplantation as described under 14.00E3. Consider under a disability until at least 12 months from the date of transplantation. Thereafter, evaluate any residual impairment(s) under the criteria for the affected body system.
or
C. Repeated manifestations of an immune deficiency disorder, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social function.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.08
14.08 [Reserved]
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.09
14.09 Inflammatory arthritis. As described in 14.00D6. With:
A. Persistent inflammation or persistent deformity of:
a. A documented medical need (see 14.00C6) for a walker, bilateral canes, or bilateral crutches (see 1.00C6d) or a wheeled and seated mobility device involving the use of both hands (see 1.00C6e(i)); or
b. An inability to use one upper extremity to independently initiate, sustain, and complete work-related activities involving fine and gross movements (see 14.00C7), and a documented medical need (see 14.00C6) for a one-handed, hand-held assistive device (see 1.00C6d) that requires the use of the other upper extremity or a wheeled and seated mobility device involving the use of one hand (see 1.00C6e(ii)); or
B. Inflammation or deformity in one or more major joints of an upper or a lower extremity (see 14.00C8) with:
Involvement of two or more organs/body systems with one of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
C. Ankylosing spondylitis or other spondyloarthropathies, with:
Ankylosis (fixation) of the dorsolumbar or cervical spine as shown by appropriate medically acceptable imaging and measured on physical examination at 45° or more of flexion from the vertical position (zero degrees); or
Ankylosis (fixation) of the dorsolumbar or cervical spine as shown by appropriate medically acceptable imaging and measured on physical examination at 30° or more of flexion (but less than 45°) measured from the vertical position (zero degrees), and involvement of two or more organs/body systems with one of the organs/body systems involved to at least a moderate level of severity.
or
D. Repeated manifestations of inflammatory arthritis, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.10
14.10 Sjögren's syndrome. As described in 14.00D7. With:
A. Involvement of two or more organs/body systems, with:
One of the organs/body systems involved to at least a moderate level of severity; and
At least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss).
or
B. Repeated manifestations of Sjögren's syndrome, with at least two of the constitutional symptoms or signs (severe fatigue, fever, malaise, or involuntary weight loss) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.
20 C.F.R. Pt. 404, Subpt. P, App. 1, § 14.11
14.11 Human immunodeficiency virus (HIV) infection. With documentation as described in 14.00F1 and one of the following:
A. Multicentric (not localized or unicentric) Castleman disease affecting multiple groups of lymph nodes or organs containing lymphoid tissue (see 14.00F3a).
OR
B. Primary central nervous system lymphoma (see 14.00F3b).
OR
C. Primary effusion lymphoma (see 14.00F3c).
OR
D. Progressive multifocal leukoencephalopathy (see 14.00F3d).
OR
E. Pulmonary Kaposi sarcoma (see 14.00F3e).
OR
F. Absolute CD4 count of 50 cells/mm or less (see 14.00F4).
OR
G. Absolute CD4 count of less than 200 cells/mm or CD4 percentage of less than 14 percent, and one of the following (values do not have to be measured on the same date) (see 14.00F5):
BMI measurement of less than 18.5; or
Hemoglobin measurement of less than 8.0 grams per deciliter (g/dL).
OR
H. Complication(s) of HIV infection requiring at least three hospitalizations within a 12-month period and at least 30 days apart (see 14.00F6). Each hospitalization must last at least 48 hours, including hours in a hospital emergency department immediately before the hospitalization.
OR
I. Repeated (as defined in 14.00I3) manifestations of HIV infection, including those listed in 14.11A-H, but without the requisite findings for those listings (for example, Kaposi sarcoma not meeting the criteria in 14.11E), or other manifestations (including, but not limited to, cardiovascular disease (including myocarditis, pericardial effusion, pericarditis, endocarditis, or pulmonary arteritis), diarrhea, distal sensory polyneuropathy, glucose intolerance, gynecologic conditions (including cervical cancer or pelvic inflammatory disease, see 14.00F7), hepatitis, HIV-associated dementia, immune reconstitution inflammatory syndrome (IRIS), infections (bacterial, fungal, parasitic, or viral), lipodystrophy (lipoatrophy or lipohypertrophy), malnutrition, muscle weakness, myositis, neurocognitive or other mental limitations not meeting the criteria in 12.00, oral hairy leukoplakia, osteoporosis, pancreatitis, peripheral neuropathy) resulting in significant, documented symptoms or signs (for example, but not limited to, fever, headaches, insomnia, involuntary weight loss, malaise, nausea, night sweats, pain, severe fatigue, or vomiting) and one of the following at the marked level:
Limitation of activities of daily living.
Limitation in maintaining social functioning.
Limitation in completing tasks in a timely manner due to deficiencies in concentration, persistence, or pace.