What is the Blue Book? (SSA disability listings overview)

Section 1.00 covers musculoskeletal disorders. The specific spine listings — 1.15 (disorders of the skeletal spine) and 1.16 (lumbar spinal stenosis) — require detailed imaging plus documented neurological signs and functional limitations.

This section was significantly revised in 2021. Older case files and old medical opinions sometimes still cite the prior version (1.04). Make sure your current evidence speaks to the current criteria.

Section 12.00 (mental disorders) is structured differently from most listings. Each mental disorder listing has paragraph A (medical findings: documented symptoms, history) plus paragraph B (functional limitations across four areas — understand/remember/apply information, interact with others, concentrate/persist/maintain pace, adapt/manage oneself) OR paragraph C (serial-treatment-and-marginal-adjustment alternative for chronic disorders).

Most claims in this section win or lose on the paragraph B/C functional analysis, not the diagnosis. The 2017 revision tightened these rules.

Section 13.00 covers malignant neoplastic diseases. Some cancers — stage IV solid tumors, certain leukemias, inoperable or metastatic cancers — meet listings outright on diagnosis. Others require evidence of recurrence, progression after treatment, or specific functional impacts.

Many section 13 conditions are also Compassionate Allowances, which expedites processing but doesn't bypass the 5-step evaluation. The CAL flag and the listing-meet question are separate decisions.

When you have several conditions and none meets a listing on its own, SSA must consider the combined effects. POMS DI 24515.013 and 20 CFR § 404.1523 spell this out: the combined severity may medically equal a listing even if each individual impairment doesn't.

This is where medical-source opinions on equivalence matter most. A treating physician can speak to how multiple impairments interact — functional limitations stack in ways the listings can't always anticipate.

Most adult disability conditions don't appear in the Blue Book by name, and most adult claims that are approved aren't approved at Step 3. The path forward is Step 5 — the medical-vocational allowance based on age, education, work history, and residual functional capacity (RFC).

The GRID rules (20 CFR Part 404 Subpart P Appendix 2) decide most adult claims. If you're 50 or older with limited education and a history of physical work, the GRID can direct an approval even when no listing applies.

Compassionate Allowances (CAL) is a separate flag SSA places on certain severe conditions — ALS, pancreatic cancer, early-onset Alzheimer's, and several hundred others. CAL doesn't bypass the 5-step evaluation; it expedites processing.

Many CAL conditions also meet listings. ALS, for example, meets listing 11.10 AND is on the CAL list AND triggers the Medicare 24-month waiver under P.L. 116-250. Three separate accelerators stacked together.

If you're helping a parent, spouse, or adult child figure out whether they meet a listing, the body-system map is the same one their doctor will use. Print the 14-section index. Sit with them and circle the systems that match their conditions.

Then at the next medical appointment, ask: 'Which specific listing covers this, and what evidence do we need?' Most doctors don't think in Blue Book terms day-to-day, but they can read a listing alongside you and tell you whether the criteria fit.

If your condition doesn't fit any of the situations above, you're in the same place as most disability claimants. The Blue Book is a small fraction of how disability gets decided.

Your path is Step 5: residual functional capacity, age, education, and work history. Don't read 'no listing matches' as 'no claim.' Read it as 'this case will be decided on vocational factors' — and start gathering the evidence that supports an RFC consistent with disability.

If you're still not sure where your case fits, start with the five-step evaluation overview. → See the 5-step disability evaluation