20 CFR 416.927: Medical Opinions and Treating Source Weight

20 CFR 416.927 is the Social Security Administration’s regulation for evaluating medical opinion evidence in Supplemental Security Income disability claims filed before March 27, 2017. Its centerpiece is the treating physician rule, which can require SSA to adopt your treating doctor’s opinion about your impairment when that opinion is well-supported and consistent with the rest of the record. When the opinion does not qualify for that treatment, the regulation still requires the agency to weigh it using specific factors and explain the weight it assigned. The rule remains in force for any SSI claim originally filed before the cutoff, including cases still on appeal or on remand from federal court.

What Counts as a Medical Opinion

A medical opinion under this regulation is a statement from an acceptable medical source reflecting professional judgment about your impairment’s nature and severity. That covers your symptoms, diagnosis, prognosis, and what you can still do despite your limitations.¹ The last piece carries the most weight in practice: your residual functional capacity, meaning how long you can stand, sit, lift, concentrate, and perform other work-related activities.

Medical opinions are distinct from raw medical findings. Test results and clinical observations are findings; a doctor’s professional interpretation of how those findings limit you is an opinion. SSA weighs opinions using the factors described below, while findings serve as the objective evidence that either supports or undermines them.

When a Treating Doctor’s Opinion Controls the Decision

The regulation gives special standing to treating sources, defined as acceptable medical professionals who have an ongoing treatment relationship with you. A treating source’s opinion receives controlling weight when two conditions are both met:

The opinion is well-supported by medically acceptable clinical and laboratory diagnostic techniques.
The opinion is not inconsistent with the other substantial evidence in the record.

When both conditions are satisfied, SSA must adopt the treating source’s opinion on the nature and severity of your impairment.¹ The reasoning is that a doctor who has treated you over time has a longitudinal view of your condition that a file reviewer or one-time examiner does not.

Most disputes turn on whether the opinion actually meets both prongs. Administrative law judges frequently find that a treating opinion fails one condition, usually by pointing to inconsistencies with other evidence. When that happens, the opinion is not discarded. It moves into the general weighing process.

The Good Reasons Requirement

When SSA does not give a treating source’s opinion controlling weight, the regulation requires the agency to always give good reasons in its written decision for the weight it did assign.¹ This is a mandate, not a suggestion, and failure to comply has been a leading basis for federal court remands in disability cases.²

Vague language such as “the opinion is not supported by the record,” without specific explanation, has consistently been treated as reversible error by reviewing courts. If you are appealing a denial, one of the first things worth checking is whether the ALJ actually explained, with specifics, the weight given to your treating doctor’s opinion.

How Opinions Are Weighed When Controlling Weight Does Not Apply

When a treating source’s opinion falls short of controlling weight, or when SSA is evaluating an opinion from any other medical source, the regulation requires the agency to consider several factors. No single factor is automatically decisive.

Examining and Treatment Relationship

SSA generally gives more weight to a source who has personally examined you than to one who only reviewed your file.¹ Among treating sources, a longer treatment history with more frequent visits carries more weight than a handful of appointments. The nature and extent of treatment matter too: a specialist who has ordered detailed testing and managed your condition over time will generally be credited more than a provider who saw you briefly.

Supportability and Consistency

Supportability asks whether the source backed up the opinion with relevant medical signs, laboratory findings, and a clear explanation. A checkbox form stating that you cannot work gets far less weight than a detailed narrative tying specific clinical findings to specific functional limitations. Consistency compares the opinion against the full case record. An opinion that lines up with other medical evidence, your own statements, and third-party observations will carry more weight than one that stands alone.¹

Specialization and Other Factors

SSA generally gives more weight to a specialist’s opinion on issues within that specialty than to a non-specialist addressing the same question.¹ A rheumatologist’s assessment of lupus-related limitations, for example, will typically outweigh a family doctor’s opinion on the same condition. The regulation also permits consideration of any other relevant factor, such as a source’s familiarity with SSA’s disability programs or the overall quality of the evidence submitted.

Acceptable Medical Sources and Other Sources

For claims governed by 416.927, only certain professionals qualify as acceptable medical sources whose statements count as formal medical opinions. That list includes licensed physicians, psychologists, optometrists for vision impairments, podiatrists for foot or foot-and-ankle impairments, and qualified speech-language pathologists for speech or language impairments.³ Only an acceptable medical source can establish that you have a medically determinable impairment, which is the threshold requirement for any disability finding.

Everyone else falls into the category of other sources. For pre-2017 claims, that includes nurse practitioners, physician assistants, therapists, social workers, and non-medical sources such as family members and employers. Their evidence must still be considered and weighed using the same factors. In some situations, an opinion from one of these sources can even outweigh an acceptable medical source’s opinion, for example if the other source has seen you more often, provides a better explanation, and is more consistent with the full record.¹ What these sources cannot receive is controlling weight. That designation is reserved for treating sources who are acceptable medical sources.

SSA later expanded the acceptable medical source list to include licensed advanced practice registered nurses and licensed physician assistants, among others, but that expansion applies only to claims filed on or after March 27, 2017.³ It does not apply retroactively to claims governed by 416.927.

Issues Reserved to the Commissioner

Not everything a doctor writes counts as a medical opinion. The regulation carves out certain conclusions as issues reserved to the Commissioner, meaning administrative decisions that only SSA can make. A doctor’s statement that you are disabled or unable to work does not bind the agency, and SSA will not give that kind of statement any special significance no matter who wrote it.¹

Other reserved issues include whether your impairment meets or equals a listing in SSA’s Listing of Impairments, your residual functional capacity stated in SSA’s programmatic terms, whether you can perform past work, and whether your disability continues or has ended during a review.⁴ Doctors can still offer evidence on these topics, and SSA must consider it, but the final call belongs to the agency.

Whether 416.927 Still Applies to Your Claim

The rules in 416.927 apply only to SSI claims filed before March 27, 2017. Claims filed on or after that date are governed by 20 CFR 416.920c, which eliminated the treating physician rule entirely.¹ Under the newer rule, no medical opinion receives controlling weight regardless of the source’s relationship to the claimant, and SSA evaluates opinions primarily on supportability and consistency.

The older rule is far from obsolete. Any claim originally filed before March 27, 2017, continues to be governed by 416.927 through every stage that follows, including initial decisions still pending, reconsiderations, ALJ hearings, Appeals Council review, and federal court remands. Given how long disability appeals can take, many cases still moving through the system fall under this regulation. If your claim originated before the cutoff, the treating physician rule and the good reasons requirement still govern how your medical evidence must be weighed.

1
Social Security Administration. 20 CFR 416.927 – Evaluating Opinion Evidence for Claims Filed Before March 27, 2017
2
Administrative Conference of the United States. Treating Physician Rule Final Report
3
Social Security Administration. 20 CFR 416.902 – Definitions for This Subpart
4
Social Security Administration. SSA POMS DI 24503.040 – Evaluating a Statement on an Issue Reserved to the Commissioner