SSR 83-10 RFC Assessment: Sit/Stand Option in Degenerative Disc Disease

Direct Answer

SSR 83-10 is not among the numbered sources provided, so its specific guidance on assessing RFC at the boundaries between exertional categories—and its particular discussion of sit/stand options—cannot be directly quoted or cited here. However, using the sources that are provided, the following analysis addresses the framework that governs the claimant's situation: evaluation under Listing 1.15 at step three, and application of the grid framework and sedentary rules at steps four and five.

Analysis

Step Three: Listing 1.15 Does Not Appear Met

Degenerative disc disease is evaluated under Listing 1.15 when it results in compromise of a nerve root(s) [1]. The listing requires satisfaction of all four criteria—A through D. Criterion D, the functional limitation prong, requires medical documentation of at least one of the following:

1. A documented medical need for a walker, bilateral canes, bilateral crutches, or a wheeled and seated mobility device involving use of both hands [1]; or
2. An inability to use one upper extremity for work-related fine and gross movements, together with a documented medical need for a one-handed assistive device [1]; or
3. An inability to use both upper extremities for work-related activities [1].

A claimant who can stand and walk for at least 2 hours in an 8-hour workday and requires only a positional option to alternate sitting and standing every 30 minutes does not, on the face of the hypothetical, demonstrate the level of bilateral assistive-device dependence or upper-extremity incapacity that Listing 1.15D demands [1]. Unless the claimant separately satisfies the neurological and imaging criteria of 1.15A–C, the listing is likely not met, and evaluation proceeds to RFC assessment.

Step Four: RFC and Maximum Sustained Work Capability

The grid framework provides that an individual's residual functional capacity is used "to determine his or her maximum sustained work capability for sedentary, light, medium, heavy, or very heavy work" [3]. The framework further states that "where the findings of fact made with respect to a particular individual's vocational factors and residual functional capacity coincide with all of the criteria of a particular rule, the rule directs a conclusion as to whether the individual is or is not disabled" [3]. Critically, "where any one of the findings of fact does not coincide with the corresponding criterion of a rule, the rule does not apply in that particular case and, accordingly, does not direct a conclusion" [3].

This "non-coincidence" principle is the analytical hinge for a claimant who can stand/walk at least 2 hours (suggesting capacity beyond pure sedentary) but who requires a sit/stand option every 30 minutes (a positional limitation that may prevent sustained performance of a full range of either sedentary or light work). If the claimant's RFC cannot be classified neatly as "sedentary" or "light" for purposes of the grid rules, the mechanical application of a specific rule may be precluded, and the adjudicator must assess vocational impact through other means—typically vocational expert testimony regarding the erosion of the occupational base.

Step Five: Application of the Sedentary Grid Rules

If the sit/stand limitation, combined with the claimant's reduced standing/walking capacity, effectively limits the claimant to sedentary work (or less than the full range of light work), the sedentary grid rules in Table No. 1 may apply. Among the provided rules, the following direct a finding of "Disabled":

• Rule 201.01: Advanced age, limited or less education, unskilled or none work experience [32]
• Rule 201.02: Advanced age, limited or less education, skilled or semiskilled—skills not transferable [33]
• Rule 201.09: Closely approaching advanced age, limited or less education, unskilled or none [35]
• Rule 201.10: Closely approaching advanced age, limited or less education, skilled or semiskilled—skills not transferable [36]
• Rule 201.04: Advanced age, high school graduate or more (no direct entry to skilled work), unskilled or none [40]
• Rule 201.06: Advanced age, high school graduate or more (no direct entry), skilled or semiskilled—skills not transferable [42]
• Rule 201.12: Closely approaching advanced age, high school graduate or more (no direct entry), unskilled or none [45]

Conversely, the following sedentary rules direct "Not disabled":

• Rule 201.03: Advanced age, limited or less education, skills transferable [34]
• Rule 201.05: Advanced age, high school graduate or more (direct entry to skilled work), unskilled or none [41]
• Rule 201.07: Advanced age, high school graduate or more (no direct entry), skills transferable [43]
• Rule 201.08: Advanced age, high school graduate or more (direct entry), skills not transferable [44]
• Rule 201.11: Closely approaching advanced age, limited or less education, skills transferable [37]
• Rule 201.13: Closely approaching advanced age, high school graduate or more (direct entry), unskilled or none [46]
• Rule 201.18: Younger individual age 45–49, limited or marginal education, unskilled or none [47]

Whether the Sit/Stand Option Erodes the Occupational Base

The grid framework's non-coincidence principle [3] is the operative mechanism for analyzing this question. If the adjudicator determines that the claimant can perform the full range of sedentary work, the sit/stand option may be treated as consistent with sedentary work (which by definition involves sitting with occasional standing and walking). In that case, the applicable sedentary grid rule would be applied based on age, education, and work experience [3].

However, if the 30-minute sit/stand requirement is found to impose a positional limitation that prevents the claimant from performing the full range of sedentary work, the grid rules would not directly apply because "any one of the findings of fact does not coincide with the corresponding criterion of a rule" [3]. In that scenario, the adjudicator would need to determine—with vocational resource support—whether the sit/stand option significantly erodes the sedentary occupational base. If significant erosion is found, a finding of disability may be justified even when the mechanical grid rule would otherwise direct "Not disabled."

The sources provided do not include SSR 83-10 or SSR 83-14, which contain the agency's specific guidance on the degree to which a sit/stand option erodes the light or sedentary occupational base. A follow-up inquiry could explore those rulings if needed.

Key Points

• Listing 1.15D requires assistive-device dependence or upper-extremity incapacity; a stand/walk capacity of 2 hours with a 30-minute sit/stand option does not, standing alone, satisfy that functional criterion [1].
• The grid framework uses RFC to classify maximum sustained work capability; if the claimant's RFC does not coincide with a rule's exertional criterion, "the rule does not apply" and does not direct a conclusion [3].
• If the claimant is limited to the full range of sedentary work, the sedentary grid rules (201.01–201.18) apply based on age, education, and transferability of skills [32]–[47].
• If the 30-minute sit/stand option prevents performance of the full range of sedentary work, the grid rules do not mechanically apply [3], and the adjudicator must assess whether the limitation significantly erodes the occupational base—potentially justifying disability through a vocational finding rather than a directed grid rule.
• SSR 83-10 and SSR 83-14, which provide the agency's specific guidance on sit/stand options and erosion of the occupational base, are not among the provided sources and therefore cannot be directly cited in this analysis.