Primary service-connected condition

DC 9411 — Posttraumatic stress disorder

Also known as: combat stress, mental health, post traumatic stress, Posttraumatic stress disorder, ptsd, nightmares, flashbacks, hypervigilance, startle response, mst, military sexual trauma, sexual assault

Mapped secondary conditions
12

These are commonly claimed secondary connections linked to this primary disability. Use them as a screening tool for conversations with your doctor, VSO, or VA-accredited attorney.

Primary Secondary

Posttraumatic stress disorder Generalized anxiety disorder

9400
Strong

How the connection is commonly explained

Generalized anxiety commonly develops alongside or as a result of PTSD.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened generalized anxiety disorder.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Hiatal hernia and paraesophageal hernia

7346
Strong

How the connection is commonly explained

PTSD disrupts the autonomic nervous system, increasing stomach acid production. Stress is a well-documented trigger for GERD.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened hiatal hernia and paraesophageal hernia.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Hypertensive vascular disease

7101
Strong

How the connection is commonly explained

Chronic fight-or-flight activation from PTSD elevates blood pressure over time. Multiple studies support this link.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened hypertensive vascular disease.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Major depressive disorder

9434
Strong

How the connection is commonly explained

PTSD frequently causes or worsens major depressive disorder through chronic stress and trauma responses.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened major depressive disorder.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Migraine

8100
Strong

How the connection is commonly explained

Research shows significantly higher rates of migraines among veterans with PTSD. Chronic stress and hyperarousal are migraine triggers.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened migraine.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Sleep Apnea Syndromes

6847
Strong

How the connection is commonly explained

PTSD causes hypervigilance, nightmares, and disrupted sleep patterns that contribute to obstructive sleep apnea. Medications for PTSD can cause weight gain and muscle relaxation.

Filing tip

Ask your doctor to clearly state that the secondary condition is at least as likely as not caused or aggravated by the primary service-connected condition. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened sleep apnea syndromes.

Relationship type: Aggravated by
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Primary Secondary

Posttraumatic stress disorder Erectile dysfunction, with or without penile deformity

7522
Moderate

How the connection is commonly explained

PTSD medications such as SSRIs commonly cause erectile dysfunction. Chronic stress and anxiety also directly affect sexual function.

Filing tip

A nexus letter and treatment records explaining the progression from the primary condition to the secondary condition can make a big difference. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened erectile dysfunction, with or without penile deformity.

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Irritable bowel syndrome (IBS)

7319
Moderate

How the connection is commonly explained

PTSD affects the gut-brain axis, disrupting normal bowel function. The stress response commonly manifests as GI symptoms.

Filing tip

A nexus letter and treatment records explaining the progression from the primary condition to the secondary condition can make a big difference. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened irritable bowel syndrome (ibs).

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Temporomandibular disorder (TMD)

9905
Moderate

How the connection is commonly explained

PTSD-related stress and anxiety cause jaw clenching and teeth grinding, leading to TMJ disorder.

Filing tip

A nexus letter and treatment records explaining the progression from the primary condition to the secondary condition can make a big difference. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened temporomandibular disorder (tmd).

Relationship type: Caused by
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Primary Secondary

Posttraumatic stress disorder Tinnitus, recurrent

6260
Moderate

How the connection is commonly explained

PTSD hypervigilance can worsen perception of tinnitus. Often co-occurs from shared combat noise exposure.

Filing tip

A nexus letter and treatment records explaining the progression from the primary condition to the secondary condition can make a big difference. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened tinnitus, recurrent.

Relationship type: Aggravated by
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Primary Secondary

Posttraumatic stress disorder Chronic Fatigue

NO-DC-CHRONIC-FATIGUE
Emerging

How the connection is commonly explained

PTSD disrupts sleep architecture, leading to persistent fatigue even with adequate sleep time.

Filing tip

Because this connection can be more case-specific, detailed medical rationale and symptom history are especially important. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened chronic fatigue.

Relationship type: Caused by
No standalone condition detail page is available for this mapped item.
No standalone diagnostic code entry exists in the conditions table, so treat this as an informational claim lead and confirm the best code with a VSO or medical provider.
Primary Secondary

Posttraumatic stress disorder Substance Abuse

NO-DC-SUBSTANCE-ABUSE
Emerging

How the connection is commonly explained

Self-medication with alcohol or drugs is common with PTSD.

Filing tip

Because this connection can be more case-specific, detailed medical rationale and symptom history are especially important. For this pairing, ask the provider to explain how posttraumatic stress disorder led to or worsened substance abuse.

Relationship type: Caused by
No standalone condition detail page is available for this mapped item.
No standalone diagnostic code entry exists in the conditions table, so treat this as an informational claim lead and confirm the best code with a VSO or medical provider.

This condition may also be secondary to

Major or mild neurocognitive disorder due to traumatic brain injury
DC 9304
Strong

TBI-related neurocognitive disorder frequently co-occurs with PTSD, with TBI increasing vulnerability to PTSD development.

Residuals of traumatic brain injury (TBI)
DC 8045
Strong

The traumatic event causing TBI frequently also causes PTSD.

How to File a Secondary Claim

1. Have your primary condition already service-connected.
2. Get diagnosed with the secondary condition.
3. Get a nexus letter from a doctor linking them.
4. File VA Form 21-526EZ and select the claim as a secondary claim.
5. Attend the C&P exam if one is scheduled.

Disclaimer: Secondary connections shown are based on commonly established medical links. Individual claims require medical evidence. Consult a VSO or VA-accredited attorney.