Whether the ALJ's RFC assessment required remand because it did not include an adequate function-by-function analysis.
Holding
Yes. Although an explicit function-by-function discussion is not required in every case, remand was required here because the ALJ's incomplete analysis and unexplained treatment of conflicting evidence prevented meaningful judicial review.
Reasoning
Social Security Ruling 96-8p requires an ALJ to identify a claimant's functional limitations and assess work-related abilities on a function-by-function basis before expressing the RFC in broad exertional terms such as light work. The RFC decision must also contain a narrative explaining how specific medical and nonmedical evidence supports each conclusion.
The Fourth Circuit declined to adopt a per se rule requiring remand whenever an ALJ fails to spell out every function separately. Remand would be futile where omitted functions are irrelevant or uncontested. But remand is appropriate when the ALJ fails to assess relevant functions despite conflicting evidence, or when deficiencies in the explanation frustrate meaningful review.
Here, the ALJ stated what Mascio could do but did not explain whether she could perform those functions throughout a full workday. The omission was especially serious because the record included conflicting state-agency RFC assessments: one supported medium work and lifting up to fifty pounds, while another limited Mascio to twenty pounds. The ALJ's light-work finding appeared more consistent with the latter assessment, yet the ALJ did not discuss it and left an incomplete sentence where he appeared prepared to state the weight assigned to the former assessment. The court therefore could not tell how the ALJ reached the functional conclusions.