Body system 111.00 in the SSA Blue Book covers neurological disorders for children (Part B). SSA uses these listings at step 3 of its five-step disability evaluation. If your medical evidence meets one of the listings on this page, your claim is approved without the disability examiner moving on to past-work and labor-market analysis at steps 4 and 5.
Most claimants who do not meet a listing in this body system can still be approved at later steps based on their residual functional capacity, age, education, and past work. The medical evidence you build for a listing-match argument is the same evidence those later steps rely on, so the listing criteria are useful to read even when a claim looks like a step-5 approval candidate.
Body system code
111.00
Part B (children)
Active listings
14
Specific impairments
Audience
Children under 18
SSA disability evaluation
Step in evaluation
3 of 5
Listing match approves the claim
Active listings under 111.00
Every listing below has current SSA-published criteria. Codes that SSA reserved for future use or has withdrawn since 1985 are not included. Click a listing where a plain-English breakdown is available, or follow the regulation link for SSA's exact text.
Source: SSA Blue Book, body system 111.00. Last synced 2026-05-04.
How SSA describes this body system
Excerpted from SSA's regulatory introduction at the top of the body-system page. Full text and all subsection cross-references live on ssa.gov.
Neurological A. Which neurological disorders do we evaluate under these listings ? We evaluate epilepsy, coma or persistent vegetative state (PVS), and neurological disorders that cause disorganization of motor function, bulbar and neuromuscular dysfunction, or communication impairment. Under this body system, we evaluate the limitations resulting from the impact of the neurological disease process itself. If you have a neurological disorder(s) that affects your physical and mental functioning, we will evaluate your impairments under the rules we use to determine functional equivalence. If your neurological disorder results in only mental impairment or if you have a co-occurring mental condition that is not caused by your neurological disorder (for example, Autism spectrum disorder), we will evaluate your mental impairment under the mental disorders body system, 112.00 . B. What evidence do we need to document your neurological disorder ? We need both medical and non-medical evidence (signs, symptoms, and laboratory findings) to assess the effects of your neurological disorder. Medical evidence should include your medical history, examination findings, relevant laboratory tests, and the results of imaging. Imaging refers to medical imaging techniques, such as x-ray, computerized tomography (CT), magnetic resonance imaging (MRI), and electroencephalography (EEG). The imaging mus...
Read the full text on the SSA Blue Book 111.00 page.
What happens during a claim under 111.00
The disability examiner assigned to your claim looks for medical records that match the lettered criteria of one of the listings above. The examiner does not diagnose you and does not weigh symptoms in isolation. They line up the listing's required findings against your records and decide whether the records contain enough to satisfy the listing as written.
If your records meet a listing, the claim is approved at step 3. If not, the examiner moves on to evaluating your residual functional capacity (RFC) at steps 4 and 5. RFC is a description of what work activity you can still do despite your impairments. The listings inform the RFC because the same medical evidence the listings ask for is the evidence the examiner uses to write the RFC. The disability overview walks through the full five-step evaluation in plain English.
Work activity, SGA, and the SSDI gate
A claim under any Blue Book listing is denied at step 1 if you are working at or above the substantial gainful activity threshold. SGA is the monthly earnings test SSA applies before any medical evaluation. Earning above SGA in countable work activity means SSA never reaches the listings on this page. Earning below SGA, or being out of work entirely, lets the medical evaluation proceed.
Once you are approved and receiving SSDI, the trial work period and extended period of eligibility apply differently than at the initial-application stage. Both are explained on the SGA amount page with year-by-year thresholds since 1975.
Adult listings for the same body system
SSA publishes a parallel body system at 11.00 for the adult (18 and over) side of the same conditions. Many listings cross over with tighter functional thresholds for the children's version. The Neurological disorders page covers the 16 active listings on that side.