SF 3112C Physician Statement: What Your Doctor Needs to Write

Why This Form Decides Your Application

OPM denies FERS disability retirement applications every day — not because the applicant doesn't qualify, but because the physician's statement fails to connect the medical diagnosis to the job. SF 3112C is where that connection either gets made or doesn't, and most treating physicians have never seen this form before your application lands on their desk.

The problem is structural. Doctors are trained to write clinical notes for other clinicians: diagnosis, treatment plan, prognosis. OPM doesn't need a clinical note. They need a functional assessment — a detailed explanation of what the medical condition prevents the employee from doing, tied directly to the specific duties listed in the official position description.

What OPM Actually Evaluates

OPM's Disability Division reviews SF 3112C looking for three things:

A documented clinical diagnosis. This is the baseline — the specific medical condition, supported by clinical findings, diagnostic testing, and treatment history. ICD-10 codes alone aren't sufficient. OPM wants the narrative context: when symptoms began, how the condition has progressed, what treatments have been attempted, and the current prognosis.

Functional limitations. What can the employee no longer do? Not in general life terms, but in terms of occupational function. "Cannot lift more than 10 pounds" is useful only if the position description requires lifting. "Cannot maintain sustained concentration for periods exceeding 30 minutes due to medication side effects and symptom intrusion" — that connects to virtually any desk job's essential functions.

The clinical nexus. This is the piece that makes or breaks the application. The physician must explicitly state that the diagnosed condition causes functional limitations that prevent the employee from performing one or more critical elements of their specific position. Not "a job" — their particular job, as described in the official position description.

The Position Description Is Essential

Before your physician writes a single word on SF 3112C, they need a copy of your official position description. Not a summary you wrote from memory — the actual PD that your agency has on file, with its list of major duties, physical requirements, and performance elements.

The physician's statement has to respond to this document, duty by duty. If your PD says you must conduct field inspections requiring walking over uneven terrain for 2–3 hours, and your doctor writes that your spinal condition limits you to 15 minutes of walking on flat surfaces, that's a clear nexus. If the PD says you must analyze complex regulatory filings under time pressure, and your doctor explains that your cognitive processing speed has declined 40% due to medication effects, that's a nexus too.

Without the PD, physicians default to generic language — and generic language gets denied.

What a Strong Statement Looks Like

A strong SF 3112C walks through each critical duty and explains, in clinical terms, why the employee can't perform it. The structure follows a pattern:

First, establish the clinical foundation — diagnosis, onset, progression, testing results, treatment attempts, current medications and their side effects.

Then, for each relevant duty from the position description, explain the specific functional limitation that prevents performance. Use objective measures where possible: range of motion in degrees, concentration duration from neuropsychological testing, pain scales correlated with functional benchmarks.

Include the prognosis. OPM needs to know whether the condition is likely to last at least one year. A condition that's expected to resolve in six months with treatment generally won't support a disability retirement. Chronic, progressive, or permanent conditions with documented treatment-resistant components are strongest.

Common Physician Mistakes

"The patient is unable to work." This conclusory statement tells OPM nothing. Unable to work where? Doing what? Why? If this is the strongest language in the physician's statement, the application is almost certainly heading for denial.

Diagnosis without functional impact. Writing "Patient has been diagnosed with major depressive disorder" and stopping there. OPM's question isn't whether you're diagnosed — it's whether that diagnosis prevents you from performing your job duties.

Failing to address treatment. OPM wants to know what treatments have been tried and whether the condition is treatment-resistant. If the physician doesn't mention treatment history, OPM may conclude that further treatment could resolve the condition.

Using another physician's records without independent evaluation. If your treating physician relies entirely on reports from other specialists without adding their own clinical assessment, OPM may question the completeness of the evaluation.

How to Work With Your Doctor

Most physicians will put in the effort to write a thorough statement if you give them the right materials. Before the appointment where you discuss SF 3112C:

Provide your official position description, highlighted with the duties you can no longer perform. Give them a written summary of your functional limitations — specific examples of tasks you've failed to complete, absences caused by the condition, and performance deficiencies your supervisor has documented.

If your doctor isn't comfortable writing the detailed functional assessment OPM requires, consider asking for a referral to a specialist who can perform a formal functional capacity evaluation. Some conditions — particularly psychiatric diagnoses — benefit from neuropsychological testing that produces the kind of objective data OPM finds persuasive.

The FERS Disability Retirement Guide includes a physician collaboration template that structures exactly what information your doctor needs and how to present it in OPM's expected format.

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