20 C.F.R. § 416.945

(a) General—(1) Residual functional capacity assessment. Your impairment(s), and any related symptoms, such as pain, may cause physical and mental limitations that affect what you can do in a work setting. Your residual functional capacity is the most you can still do despite your limitations. We will assess your residual functional capacity based on all the relevant evidence in your case record. (See § 416.946.)

(2) If you have more than one impairment. We will consider all of your medically determinable impairments of which we are aware, including your medically determinable impairments that are not “severe,” as explained in §§ 416.920(c), 416.921, and 416.923, when we assess your residual functional capacity. (See paragraph (e) of this section.)

(3) Evidence we use to assess your residual functional capacity. We will assess your residual functional capacity based on all of the relevant medical and other evidence. In general, you are responsible for providing the evidence we will use to make a finding about your residual functional capacity. (See § 416.912(c).) However, before we make a determination that you are not disabled, we are responsible for developing your complete medical history, including arranging for a consultative examination(s) if necessary, and making every reasonable effort to help you get medical reports from your own medical sources. (See §§ 416.912(d) through (e).) We will consider any statements about what you can still do that have been provided by medical sources, whether or not they are based on formal medical examinations. (See § 416.913.) We will also consider descriptions and observations of your limitations from your impairment(s), including limitations that result from your symptoms, such as pain, provided by you, your family, neighbors, friends, or other persons. (See paragraph (e) of this section and § 416.929.)

(4) What we will consider in assessing residual functional capacity. When we assess your residual functional capacity, we will consider your ability to meet the physical, mental, sensory, and other requirements of work, as described in paragraphs (b), (c), and (d) of this section.

(5) How we will use our residual functional capacity assessment. (i) We will first use our residual functional capacity assessment at step four of the sequential evaluation process to decide if you can do your past relevant work. (See §§ 416.920(f) and 416.960(b).)

(ii) If we find that you cannot do your past relevant work, you do not have any past relevant work, or if we use the procedures in § 416.920(h) and § 416.962 does not apply, we will use the same assessment of your residual functional capacity at step five of the sequential evaluation process to decide if you can adjust to any other work that exists in the national economy. (See §§ 416.920(g) and 416.966.) At this step, we will not use our assessment of your residual functional capacity alone to decide if you are disabled. We will use the guidelines in §§ 416.960 through 416.969a, and consider our residual functional capacity assessment together with the information about your vocational background to make our disability determination or decision. For our rules on residual functional capacity assessment in deciding whether your disability continues or ends, see § 416.994.

(b) Physical abilities. When we assess your physical abilities, we first assess the nature and extent of your physical limitations and then determine your residual functional capacity for work activity on a regular and continuing basis. A limited ability to perform certain physical demands of work activity, such as sitting, standing, walking, lifting, carrying, pushing, pulling, or other physical functions (including manipulative or postural functions, such as reaching, handling, stooping or crouching), may reduce your ability to do past work and other work.

(c) Mental abilities. When we assess your mental abilities, we first assess the nature and extent of your mental limitations and restrictions and then determine your residual functional capacity for work activity on a regular and continuing basis. A limited ability to carry out certain mental activities, such as limitations in understanding, remembering, and carrying out instructions, and in responding appropriately to supervision, coworkers, and work pressures in a work setting, may reduce your ability to do past work and other work.

(d) Other abilities affected by impairment(s). Some medically determinable impairment(s), such as skin impairment(s), epilepsy, impairment(s) of vision, hearing or other senses, and impairment(s) which impose environmental restrictions, may cause limitations and restrictions which affect other work-related abilities. If you have this type of impairment(s), we consider any resulting limitations and restrictions which may reduce your ability to do past work and other work in deciding your residual functional capacity.

(e) Total limiting effects. When you have a severe impairment(s), but your symptoms, signs, and laboratory findings do not meet or equal those of a listed impairment in appendix 1 of subpart P of part 404 of this chapter, we will consider the limiting effects of all your impairment(s), even those that are not severe, in determining your residual functional capacity. Pain or other symptoms may cause a limitation of function beyond that which can be determined on the basis of the anatomical, physiological or psychological abnormalities considered alone; e.g., someone with a low back disorder may be fully capable of the physical demands consistent with those of sustained medium work activity, but another person with the same disorder, because of pain, may not be capable of more than the physical demands consistent with those of light work activity on a sustained basis. In assessing the total limiting effects of your impairment(s) and any related symptoms, we will consider all of the medical and nonmedical evidence, including the information described in § 416.929(c).