Adriana de la Torre, NOSSCR Sustaining Member

In Shillington v. Bisignano, the Ninth Circuit offers a clear, if sobering, reminder of how difficult it is to overturn an Administrative Law Judge’s (ALJ) denial of Social Security Disability Insurance (SSDI) benefits.

While the case does not break new doctrinal ground, it reinforces several practical realities that continue to shape disability litigation: the dominance of the “substantial evidence” standard, the centrality of consistency in medical opinions, and the increasingly decisive role of the harmless error doctrine.

This case is less about what the ALJ did perfectly, and more about how much imperfection appellate courts are willing to tolerate.

Case Overview

The claimant appealed the denial of SSDI benefits, challenging the ALJ’s evaluation of:

• Treating and examining medical opinions
• State agency medical findings
• His own subjective symptom testimony
• Third-party lay witness statements

The Ninth Circuit reviewed the district court’s decision de novo and ultimately affirmed the denial, finding that the ALJ’s conclusions were supported by substantial evidence and free of reversible legal error.

1. Medical Opinion Evidence: Consistency Is Still King

At the heart of the court’s analysis emphasizes two primary factors when evaluating medical opinions: supportability and consistency.

The ALJ discounted multiple provider opinions on the basis that their conclusions were not adequately supported by their own treatment notes and were inconsistent with the broader medical record.

For instance, one provider opined that the claimant could not sustain an eight-hour workday due to a combination of physical and cognitive impairments. However, the provider’s own clinical findings reflected largely normal physical examinations, minimal objective abnormalities, and little documentation of mental health limitations.

The Ninth Circuit found this discrepancy sufficient to uphold the ALJ’s decision.

Practical Implication

For practitioners, the lesson is straightforward but critical: medical source statements must align with treatment records. Any internal inconsistency, no matter how subtle, creates an opening for the ALJ to discount the opinion.

2. Mental Health Evidence: The Power of “Improvement”

The court also addressed the evaluation of mental health opinions, particularly those describing “severe” or “moderately severe” limitations.

Here, the ALJ found those opinions unpersuasive in light of treatment notes showing:

• Improved memory
• Increased focus
• Cooperative behavior during sessions
• Limited treatment with positive response

The Ninth Circuit agreed, concluding that evidence of improvement, even if partial, can undermine claims of disabling severity.

Practical Implication

“Improvement” does not need to equate to full recovery. It simply needs to introduce enough inconsistency to weaken the claimed level of impairment. This makes it essential for practitioners to contextualize improvement within the broader longitudinal record, rather than allowing isolated notations to define the narrative.

3. Subjective Symptom Testimony: Still Anchored to Objective Evidence

The claimant also challenged the ALJ’s rejection of his subjective symptom testimony. The ALJ found the testimony inconsistent with:

• Benign imaging results
• Normal physical examinations
• Evidence of intact gait and mobility
• Documented daily activities
• Overall improvement with treatment

The Ninth Circuit upheld this analysis, reiterating a long-standing principle: contradiction with the medical record is a sufficient basis to discount subjective complaints.

Practical Implication

While subjective testimony remains an essential component of disability claims, it rarely prevails where the objective record trends toward mild or moderate findings. Bridging that gap remains one of the central challenges in SSDI litigation.

4. Harmless Error Doctrine: The Deciding Factor

One of the most notable aspects of the decision is the court’s treatment of a clear legal error.

The ALJ failed to properly explain the rejection of third-party lay witness testimony, a requirement under Ninth Circuit precedent. Under normal circumstances, this could warrant remand.

However, the court deemed the error harmless because the third-party statements largely mirrored the claimant’s own testimony, which had already been properly discounted.

Practical Implication

This is a critical reminder: not all errors are created equal. On appeal, identifying error is not enough. The claimant must demonstrate that the error had a meaningful impact on the outcome.

5. RFC and Step Five: Derivative Arguments Will Not Carry the Day

Finally, the court rejected the claimant’s challenge to the residual functional capacity (RFC) assessment and Step Five findings.

The reasoning was straightforward: these arguments were entirely dependent on earlier claims that the ALJ improperly evaluated the evidence. Once those claims failed, the RFC challenge collapsed with them.

Practical Implication

RFC arguments must stand independently. Simply repackaging earlier evidentiary challenges is unlikely to succeed at the appellate level.

Shillington v. Bisignano reinforces several enduring truths about Social Security disability appeals:

• The substantial evidence standard remains highly deferential
• Internal inconsistencies in medical evidence are often dispositive
• The harmless error doctrine frequently preserves flawed ALJ decisions

For practitioners, the takeaway is clear: demonstrate that the errors were consequential, capable of altering the outcome.

In a system where deference is the rule, precision in building and presenting the record is not just helpful, it is essential.

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The views and opinions expressed in this article are the author’s own and do not necessarily reflect the views of NOSSCR, its leadership, or staff.