Nexus Letter for Erectile Dysfunction Secondary to PTSD

What a Secondary Claim Means Here

A direct claim connects a condition to something that happened in service. A secondary claim connects it to a condition the VA has already service-connected. The rule that allows it is 38 C.F.R. 3.310, and its operative sentence is short: except as provided in 38 C.F.R. 3.300(c), disability which is proximately due to or the result of a service-connected disease or injury shall be service connected.

Erectile dysfunction secondary to PTSD fits that in two different ways, and the difference matters when the letter is written. Either the PTSD itself is what brought the condition on, or the medication prescribed to treat the PTSD did. VA's own manual confirms the second route is available: entitlement can rest on a multi-link causal chain between a service-connected disability and the loss of use, and it is not limited to certain disabilities.

One common objection does not hold. Your PTSD did not have to be rated, or even diagnosed, at the time the erectile dysfunction started. VA's manual says so directly, citing Frost v. Shulkin. What has to be settled before the secondary claim can succeed is that the PTSD is service-connected now.

The claim rests on your service-connected PTSD, so that rating needs to be settled first.

New to these documents? Start with our primer on what a nexus letter is.

Why a 0 Percent Rating Is the Whole Point

The VA rates erectile dysfunction under 38 C.F.R. 4.115b, Diagnostic Code 7522. The current entry is a single line with a single number: erectile dysfunction, with or without penile deformity, rated 0 percent. There is no higher tier. The older version of the code that turned on penile deformity was replaced when VA rewrote the genitourinary schedule, effective November 14, 2021.

So a granted erectile dysfunction claim adds nothing to your combined rating. Anyone who tells you your percentage will go up is wrong. The benefit is somewhere else, and it is real: Special Monthly Compensation at the K rate, paid for loss or loss of use of a creative organ. VA's own rate table says the K rate is added to your basic compensation for any disability rating from 0 to 100 percent, and the statute makes it independent of the rest of your compensation. As of the December 1, 2025 rates, SMC-K is $139.87 per month, and VA updates it with each cost-of-living adjustment.

One precision point that most pages get wrong, and that matters if you are quoting authority to the VA. 38 C.F.R. 3.350(a)(1) is the regulation that pays SMC at the K rate, but it never mentions erectile function. It defines loss of use of a creative organ through the acquired absence of a testicle, testicular atrophy measurements, or a biopsy showing absence of spermatozoa. The rule that erectile dysfunction itself qualifies comes from VA's adjudication manual, which directs the rater to award SMC based on loss of use of a creative organ where medical evidence shows the loss of erectile power secondary to a disease process. Cite the regulation for the payment and the manual for the rule, and keep them separate.

“Award SMC based on L/LOU of a creative organ if medical evidence of record shows ... the loss of erectile power secondary to a disease process, such as diabetes or multiple sclerosis, in a male Veteran.”M21-1, Part VIII, Subpart iv, Chapter 4, Section A, topic 4.c

The examples in that sentence are diabetes and multiple sclerosis, not PTSD. That is not a limit. A separate note in the same topic says entitlement may rest on a multi-link causal chain between a service-connected disability and the loss of use, and is not limited to certain disabilities. But it does tell you what the letter has to do: it has to build the chain, because the manual is not going to build it for you.

For the full Special Monthly Compensation walkthrough and the eligibility estimator, see our guide to nexus letters for erectile dysfunction.

Caused By It, or Made Worse By It

These are two different claims with two different proofs, and collapsing them is one of the most common ways a letter gets less weight than it should. Decide which one your facts support before anyone starts writing.

One thing on this page that most sources still have wrong

Read 38 C.F.R. 3.310(b) today and it still tells the rating activity to deduct any increase in severity due to the natural progress of the disease. Many pages quote that clause as live law. VA has stopped applying it.

After Spicer v. McDonough, 61 F.4th 1360 (Fed. Cir. 2023), which held that the statute requires a but-for causation standard rather than a stricter proximate-cause standard, VA's manual says it will apply the broader but-for standard and will no longer consider natural progress when deciding an aggravation claim. The same passage says permanent worsening is not required either.

That is a meaningful change in your favor, and it is worth knowing when an older denial or an older article tells you otherwise.

The baseline is still required, and it is where these claims fail

The regulation says the baseline is established by medical evidence created before the onset of aggravation, or by the earliest medical evidence created between the onset of aggravation and the evidence establishing the current level. VA's manual adds a third route the regulation leaves out: any other credible evidence, including lay evidence, that supports establishment of the baseline. Lay evidence on its own may not be enough, but it can support the baseline and prompt the VA to develop the claim further.

If no baseline can be established, the manual is blunt: no aggravation can be demonstrated, and the claim is denied once the duty to assist is met. It also tells adjudicators not to assume a baseline of 0 percent when one cannot be established, which cuts both ways.

There is a quiet piece of good news in the same section. Aggravation is established by any increase in severity, whether or not it would produce a higher schedular evaluation. Where the baseline and the current level sit at the same level, the manual directs the rater to grant service connection and assign a noncompensable evaluation. On a code that pays 0 percent anyway, that is the outcome that carries SMC-K.

Does Taking Medication Hurt the Claim?

No, and VA's manual is unusually clear about it. Special Monthly Compensation at the K rate is established even though the veteran can achieve erection and penetration with the use of medication. A separate section adds that the successful use of medication or a prosthetic implant to restore erectile ability does not preclude the award if the veteran is unable to complete the act of procreation.

The manual goes further than most veterans expect. Where an examination report shows a diagnosis of erectile dysfunction but indicates that the veteran can penetrate and ejaculate without medication, the rater is told to resolve reasonable doubt in the veteran's favor and interpret the report as establishing loss of use of a creative organ.

Read that as reassurance, not as instruction. Keep taking what you are prescribed, describe your symptoms accurately, and let the examiner record what is true. Whether to continue, change, or stop any medication is a decision for you and your prescriber on medical grounds, and it is never something to adjust for a claim.

The three exceptions the manual names

• An examination insufficient for rating purposes, meaning it lacks a valid rationale or an evidentiary basis.
• Specific evidence that the claimant's account of erectile dysfunction lacks credibility.
• A preponderance of the evidence to the contrary.

Two of those three are about the quality of the record rather than about your condition, which is a fair description of what a well-built claim file is for.

What the Nexus Letter Must Include

VA's manual sets out what makes an opinion on secondary service connection by aggravation adequate. It is written for VA examiners, which makes it the clearest available description of what a rater is looking for. A private opinion that hits all of it is hard to set aside.

1. 1The records actually reviewedName them. A private provider does not have to have read the entire claims file: the Court has held that an examiner needs to know the sufficient relevant facts, not every page. Saying which records informed the opinion is what makes that defensible.
2. 2The current level of severityThe manual requires the opinion to separately address how severe the condition is now, not just whether it exists.
3. 3The but-for question, answered directlyWhether the increase would not have occurred but for the service-connected disability, or whether the condition would have been less severe but for it. The manual specifically includes the situation where the service-connected disability interfered with or impeded treatment.
4. 4The mechanism, in medical termsFor the medication route, name the drug and describe how it affects sexual function. For the PTSD route, describe the pathway you are relying on. A bare conclusion carries almost no weight.
5. 5The literature, characterized accuratelyCite what the studies actually measured. Overstating a source is worse than citing a modest one, because it gives the VA a reason to discount the whole opinion.
6. 6A baseline, if you are claiming aggravationWhat the condition looked like before, and what changed. Without it the aggravation claim has no floor to measure from.
7. 7The probability statementAt least as likely as not, in those words, covering both causation and aggravation.

What to Give Your Provider

On this claim the pharmacy record often does more work than anything else in the file, because it puts a date on the prescription and a date on the symptoms. Gather these so the physician can write from the record rather than from your account of it.

The core file

• Your PTSD service-connection decisionThe VA letter or rating showing PTSD is service-connected, with the effective date.
• Your full medication historyEvery psychiatric medication, with start dates and dose changes. On the medication route this is the single most important document in the file.
• A current erectile dysfunction diagnosisProvider notes naming it. Notes about needing medication or a device to function count.

What strengthens it

• A timelineRoughly when your PTSD symptoms, your prescriptions, and your erectile dysfunction each began, so the physician can line them up.
• Anything showing what it was like beforeIf the problem predated the PTSD or the prescription, this is the baseline the aggravation claim needs, and it is the piece most files are missing.
• Your other health recordsDiabetes, blood pressure, cardiovascular history, and their medications. A letter that acknowledges them and explains why they do not account for the whole picture is far stronger than one that ignores them.
• Lay statementsShort statements about onset and impact. VA's manual accepts credible lay evidence as one route to establishing a baseline.

If Your Claim Is Denied

Read the denial letter for the reason, because the reason tells you what the next piece of evidence has to be. Three come up repeatedly in these claims.

Is Your Secondary Claim Ready?