OPINION

The Commissioner of Social Security appeals the district court’s grant of summary judgment to the plaintiff, William L. Al-bright, in .this action for review of the final decision of the Social Security Administra[*474] tion (SSA) denying Albright’s claim for Disability Insurance Benefits (DIB) and additional disability benefits payable through the Supplemental Security Income (SSI) program. The judgment and accompanying order directed that Albright’s claim be remanded to the SSA for de novo consideration. The district court subsequently denied the Commissioner’s motion to alter or amend the judgment, and that ruling is also encompassed within this appeal.

We conclude that the Commissioner, in denying Albright’s claim solely on the basis of a prior adverse adjudication involving an earlier time period, has interpreted too broadly our precedent on which the denial was premised. We therefore affirm the judgment of the court below.

I.

On April 17, 1991, Albright applied for DIB and SSI disability benefits, alleging that he had been unable to work since sustaining neck and lower back injuries from an on-the-job automobile accident on March 31, 1990. Albright asserted that injuries he received during a subsequent traffic mishap on August 24, 1990,, also contributed to his physical infirmities.

The claims were ultimately heard by an ALJ, who issued a Decision and Order denying benefits. The ALJ declined to credit Albright’s testimony regarding the intensity of his pain, concluding from the objective medical evidence that any lingering impairment was “not severe,” and had not been since at least January 3, 1991. ^[1] Because the duration of his qualifying impairment was, at most,approximately nine months, Albright was ineligible for a disability award. See 42 U.S.C. § 423(d)(1)(A) (impairment must be one “which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months”) .The ALJ’s finding of no disability applied to Albright’s condition through May 28, 1992, the date of the decision. Albright did not appeal the adverse ruling.

In November and December 1992, Al-bright again filed SSI and DIB applications. The SSA considers these applications to be new claims, relating to Albright’s condition subsequent to the prior adjudication, ie., from May 29, 1992, onward.

On October 26, 1994, a second ALJ issued a Decision and Order that again denied Albright’s claims. This time, however, the denial was premised not on an evaluation of Albright’s physical condition, but instead on Social Security Acquiescence Ruling 94-2(4), purported to be a codification of our holding in Lively v. Secretary of HHS, 820 F.2d 1391 (4th Cir.1987). AR 94-2(4) provides, in pertinent part:

This Ruling applies only to .... finding[s] required at a step in the sequential evaluation process for determining disability ... made in a final decision by an Administrative Law Judge or the Appeals Council on a prior disability claim. When adjudicating a subsequent disability claim with an unadjudicated period arising under the same title of the Act as the prior claim, adjudicators must adopt such a finding from the final decision ... on the prior claim in determining whether the claimant is disabled[*475] with respect to the unadjudicated period unless there is new and material evidence relating to such a finding.

Noting that Albright’s initial claims had failed at the second step of the sequential evaluation process, ^[2] the second ALJ concluded that,absent new and material evidence regarding the severity of the alleged impairment, AR 94-2(4) dictated that Al-bright’s claims be again denied.

The Appeals Council summarily denied Albright’s request for review, prompting the filing of this action in the district court. Albright moved for summary judgment, and the SSA cross-moved for judgment on the pleadings; the motions were referred to a magistrate judge. On June 20, 1997, the magistrate judge issued a report and recommendation to the effect that, in promulgating AR 94-2(4), the SSA had interpreted our holding in Lively too broadly.

The district court adopted the magistrate judge’s findings and conclusions, and, on December 15, 1997, it entered an order granting summary judgment to Albright and remanding his claims to the SSA for de novo consideration. From that final order, and from the district court’s denial of the SSA’s subsequent motion to alter or amend the judgment, the Commissioner appeals.

II.

A.

In Lively, the claimant was denied disability benefits at the fifth step of the evaluation process. See note 2, supra. Although Lively was found to lack the residual functional capacity (RFC) to return to his past work as a coal miner, he was adjudged capable, as of October 19,-1981, of performing “light” work. Approximately two weeks after the ALJ’s decision, Lively became 55 years of age, triggering a potential change of result with regard to the ultimate question of his disability. Lively’s birthday qualified him as a person of “advanced age,” mean-ing that his ability to do only light work would not preclude an award of benefits. ^[3]

Lively nevertheless waited more than two years — until December 14, 1988 — to file his second application for benefits. Surprisingly,the claim was denied; the second ALJ found that Lively had retained the RFC to perform his old job, which was classified as requiring “medium” exertion. Lively filed suit in the district court, which affirmed the agency’s decision. We reversed, opining that it was “utterly inconceivable that [Lively’s] condition had so improved in two weeks as to enable him to perform medium work.” Lively, 820 F.2d at 1892. We noted that there was “no evidence of any such miraculous improvement” that might provide “an independent basis to sustain a finding contrary to the final earlier finding.” Id.

From our decision in Lively, the SSA distilled AR 94-2(4), which applies only to those claimants residing within the geographical con-fines of the Fourth Circuit. In Albright’s case, the Ruling erects an absolute bar to an award of benefits, unless he can produce new and material evidence that his impairment increased in severity by June 30, 1995, when his insured status expired.

[*476] B.

The SSA treats a claimant’s second or successive application for disability benefits as a claim apart from those earlier filed, at least to the extent that the most recent application alleges a previously unadjudicated period of disability. At each decisionmaking level, the agency recognizes the traditional rule that, absent an identity of claims, principles of claim preclusion (historically referred to as resjudi-cata) do not apply. ^[4]

The SSA's treatment of later-filed applications as separate claims is eminently logical and sensible, reflecting the reality that the mere passage of time often has a deleterious effect on a claimant’s physical or mental condition. As Judge Posner recently put it, “Res judicata bars attempts to relitigate the same claim, but a claim that one became disabled in 1990 is not the same as a claim that one became disabled in 1994.” Groves v. Apfel, 148 F.3d 809, 810 (7th Cir.1998). ^[5]

Contrary, then, to the principles of claim preclusion long understood to apply in Social Security cases, AR 94-2(4) operates to mechanistically merge two claims into one. Though the text of the Ruling speaks of “findings” and not “claims,” the findings to which it refers are the ultimate facts that the claimant must prove in order to demonstrate his entitlement to benefits. The claimant’s failure of proof as to but one of these facts dooms his claim and, in light of the Ruling’s preclusive effect, any subsequent claim. In practice, then, AR 94-2(4)earves out an exception to the general rule that separate claims are to be considered separately.

This exception, by its nature inconsistent with the agency’s time-tested approach to preclusion, is then inconsistently applied so that only selected claimants— those residing within a particular geographical region — are subject to its dictates. Unfortunately for those claimants, the Ruling virtually always works to their detriment.

Although AR 94-2(4) would, in theory, apply to any of the sequential evaluation findings without regard to whether the particular finding had previously been determined in the claimant’s favor, the very fact that the Ruling arises only in the context of a second or subsequent proceeding means that the claimant did not prevail on some critical facet of his earlier claim. In such a situation, the Ruling will[*477] almost always operate to ensure that the claimant will again fail at the same stage. It is the rare case indeed that will prove otherwise.

Lively was that rare case. Through sheer fortuity, a finding that initially disqualified the claimant from an award of benefits convincingly demonstrated his entitlement thereto as of two weeks hence. Unlike the Ruling at issue in this case, however, the prior adjudication in Lively— though highly probative — was not conclusive. We took pains to point out that, had the agency produced substantial evidence of improvement in Lively’s condition “to indicate that [he] was capable of performing medium work,” the prior finding to the contrary need not have been sustained. Lively, 820 F.2d at 1392. ^[6] Absent such evidence, however, common sense and logic dictated that Lively’s physical condition was unlikely to have improved significantly within two weeks.

The logic so evident in Lively, however, applies with nowhere near the force in Albright’s situation. Athough we might state with some assurance that a claimant’s condition very likely remains unchanged within a discrete two-week period, we would grow ever less confident as the timeframe expands. Where, as here, the relevant period exceeds three years, our swagger becomes barely discernible. ^[7] We think it imprudent to pronounce, as a matter of law, that Abright’s ability to perform in the workplace could not have diminished between May 28,1992 (when his initial claim was decided), and June 30, 1995 (when his insured status expired). Nonetheless, a strict application of AR 94-2(4) would ordain precisely that outcome.

We therefore disagree with the Commissioner that Lively abrogated the established law of preclusion, thereby compelling us to embrace the potential inequities resulting therefrom. At its essence, Lively really has very little to do with preclusion. Athough we discussed the doctrine of res judicata generally, and more particularly its incorporation into the Social Security Act through 42 U.S.C. § 405(h), ^[8] Lively is, not directly predicated on the statute, but on “[pjrinciples of finality and fundamental fairness drawn from § 405(h).” Id, (emphases added). The distinction is subtle, but important.

Rather than signaling a sea change in the law of preclusion, the result in Lively is instead best understood as a practical illustration of the substantial evidence rule. ^[9] In other words, we determined that the finding of a qualified and disinterested tribunal that Lively was capable of performing only light work as of a certain date was such an important and probative fact as to render the subsequent finding to the contrary unsupported by substantial[*478] evidence. ^[10] To have held otherwise would have thwarted the legitimate expectations of claimants — and, indeed, society at large — that final agency adjudications should carry considerable weight. Even more importantly, judicial ratification of the SSA’s “bait-and-switch” approach to resolving Lively’s claim would have produced a result reasonably perceived as unjust and fundamentally unfair.

We expect that few prospective claimants will one day find themselves in Lively’s shoes, but many may hazard the treacherous path now trod by Albright. Though we can hardly fault the Commissioner for attempting to faithfully adhere to our precedent, this dispute illustrates the pitfalls of extrapolating a legal rule of broad applicability from the result in a heavily fact-dependent case.

III.

Acquiescence Ruling 94-2(4) is not an accurate restatement of our decision in Lively. It follows, then, that the SSA is without justification to apply the Ruling to Albright’s claims. The judgment of the district court is therefore affirmed.

AFFIRMED