Roughly 16,000 U.S. service members deployed to Karshi-Khanabad Air Base — K2, or Camp Stronghold Freedom — in Uzbekistan between 2001 and 2005, according to the Department of Veterans Affairs. The base sat on one square mile of former Soviet ground laced with leaking jet fuel lines, depleted uranium residue, asbestos roof tiles, and lead-based paint. The pain point for K2 veterans in 2026 is not whether the contamination was real. It is that the presumptive rules covering it are scattered across three different legal doorways, and most veterans only find one. This guide maps all three, in plain language, so a K2 claim is built on the strongest available path rather than the first one found.
Key Takeaways
- Confirm that K2 service dates fall inside the 2001–2005 window VA uses to identify the K2 cohort.
- Claim the PACT Act burn pit presumption first — Uzbekistan is a named presumptive location on or after September 11, 2001.
- Gather deployment orders, DD-214, and travel records that place the veteran physically at K2.
- Request the free depleted uranium urine assay through a VA Environmental Health Coordinator.
- File conditions outside the presumptive list on a direct or secondary theory instead of abandoning them.
- Track the ongoing K2 Surveillance Program and rulemaking, because the presumptive list is still moving.
Table of Contents
- Who Counts as a K2 Veteran and What VA Already Concedes
- Building the Evidence File for a K2 Toxic Exposure Claim
- Choosing the Right Legal Path: Presumptive, Direct, or Secondary
- Step-by-Step: Submitting a K2 Claim in 2026
- After Filing: The C&P Exam, the Decision, and the Appeal
- Frequently Asked Questions
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Who Counts as a K2 Veteran and What VA Already Concedes
Many K2 veterans assume they must first prove they were exposed to something. That is the wrong starting point, and it costs months. VA already concedes the exposures. The VA Public Health page for Karshi-Khanabad states that all service members at K2 may have encountered jet fuel from a leaking Soviet-era underground distribution system, volatile organic compounds, particulate matter and dust, depleted uranium from Soviet missiles destroyed on site years before U.S. occupation, asbestos in roof tiles, and lead-based paint at the in-processing center. The same page notes that environmental assessments confirmed the absence of chemical warfare agents and ionizing radiation. Knowing what VA concedes and what it disputes shapes the entire claim.
Eligibility as a K2 veteran turns on two simple facts: service at Karshi-Khanabad Air Base, and service dates inside the 2001 to 2005 U.S. occupation. VA reports that approximately 16,000 service members meet that description. The Army, Air Force, and Marine Corps all used the base to support missions into Afghanistan, so branch is not a limiting factor. Neither is rank, job code, or length of tour. A two-week temporary duty assignment at K2 places a veteran in the cohort the same as a full rotation.
Uzbekistan also carries an independent presumption. Under the PACT Act, service on or after September 11, 2001, in Afghanistan, Djibouti, Egypt, Jordan, Lebanon, Syria, Uzbekistan, or Yemen — or the airspace above them — creates a presumption of exposure to burn pits and other airborne toxins. VA states plainly that K2 veterans are fully covered under the PACT Act, including the respiratory presumptions for asthma, rhinitis, and sinusitis tied to fine particulate matter.
What Automatic Enrollment Already Gives You
K2 veterans are now auto-enrolled in the redesigned Airborne Hazards and Open Burn Pit Registry, which means a registry record may already exist without any action taken. Separately, every K2 veteran is eligible for a no-cost urine assay that tests for the isotopic signature of depleted uranium, scheduled through a VA Environmental Health Coordinator. Both are educational and medical resources rather than claim decisions, but both create documentation that a claim file can reference.
Building the Evidence File for a K2 Toxic Exposure Claim
The most common K2 denial is not about the illness. It is about location. A rating specialist who cannot confirm a veteran stood on that one square mile of Uzbekistan cannot apply the presumption, no matter how clear the diagnosis. VA reported in its October 2025 Federal Register response that 84 percent of K2 veterans are enrolled in VA health care, yet enrollment alone does not prove deployment. The evidence file has to answer the location question before it answers anything else.
Three record sets carry a K2 claim: proof of location, proof of what happened medically during service, and proof of the condition today. A file missing any one of them stalls, and the one most often missing is the first.
Proving Presence at K2
Deployment orders naming Karshi-Khanabad, Camp Stronghold Freedom, or K2 are the cleanest proof. Where orders are missing, alternatives include DD Form 214 entries showing Operation Enduring Freedom service, personnel travel vouchers, award citations referencing the deployment, flight manifests, evaluation reports covering the period, and unit histories. Buddy statements from service members who served in the same unit during the same window carry real weight when official records are thin. VA has confirmed it created a K2-specific training module in October 2024 so that claims examiners recognize these exposures, which makes clear, labeled location evidence more useful than ever.
Service Treatment Records, Private Records, and Lay Statements
Service treatment records establish what was documented at the time — respiratory complaints, skin conditions, or sick call visits during or shortly after the deployment. Private treatment records establish the current diagnosis, which every claim requires. Lay statements from a spouse, coworker, or fellow veteran bridge the years in between by describing symptoms a doctor never charted. For presumptive conditions the nexus is supplied by law, so no medical opinion linking service to illness is required. For anything outside the presumptive list, a private medical opinion explaining the connection becomes the deciding document.
Choosing the Right Legal Path: Presumptive, Direct, or Secondary
VA reported that between 2005 and March 2024, 73 percent of identified K2 veterans had filed a disability compensation claim, and 68 percent of the entire cohort received benefits. The gap between those numbers is where filing strategy lives. Every K2 condition should be routed down one of three paths before submission, because sending a non-presumptive condition through the presumptive door produces a denial that could have been avoided.
The presumptive path is the fastest. It covers the PACT Act burn pit conditions: asthma diagnosed after service, chronic bronchitis, COPD, chronic rhinitis, chronic sinusitis, constrictive or obliterative bronchiolitis, emphysema, granulomatous disease, interstitial lung disease, pleuritis, pulmonary fibrosis, sarcoidosis, and a broad list of cancers including brain, gastrointestinal, head and neck, kidney, lymphatic, lymphoma, melanoma, pancreatic, reproductive, and respiratory cancers. VA specifically identified asthma, sinusitis, rhinitis, COPD, chronic bronchitis, squamous cell carcinoma, and brain, reproductive, and respiratory cancers as covered for K2 veterans.
The direct path covers everything else. VA stated in the same notice that it considers all avenues of service connection and encourages every K2 veteran who believes service harmed their health to file, with each claim reviewed case by case. A condition absent from the presumptive list is not automatically excluded — it simply requires a current diagnosis, an in-service event or exposure, and a medical opinion linking them. The secondary path covers conditions caused or aggravated by an already service-connected condition, which is often where sleep apnea, mental health conditions, and gastrointestinal conditions belong.
Standard Claim or Fully Developed Claim
A Fully Developed Claim means all evidence is submitted at once and VA is told nothing further is coming. For a K2 presumptive claim with clean deployment orders and a current diagnosis, that package is usually complete and the FDC route makes sense. A Standard Claim keeps VA's duty to assist fully engaged, which matters when service treatment records are missing or federal records must be retrieved. Choosing FDC when records are still outstanding trades speed for a weaker file.
Step-by-Step: Submitting a K2 Claim in 2026
VA reported that K2 veterans who filed claims averaged more than 20 claimed service-connected issues, with 13.6 granted. That ratio rewards a deliberate, organized submission rather than a scattered one. These five steps put the file in order.
Step 1 — File an Intent to File. Submitting VA Form 21-0966 locks in an effective date and preserves up to one year to complete the claim. Any back pay is measured from that date, so this step is filed before the evidence is finished, not after.
Step 2 — Assemble the location packet. Pull the DD-214, deployment orders, travel vouchers, and any document naming K2, Karshi-Khanabad, or Camp Stronghold Freedom. Label the packet clearly so an examiner does not have to hunt for the proof of presence.
Step 3 — Sort conditions by legal path. Build one list of PACT Act presumptive conditions, one of direct-theory conditions needing a medical opinion, and one of secondary conditions flowing from an existing rating. Each list gets different evidence.
Step 4 — Gather current medical evidence. Every claimed condition needs a current diagnosis from a treating provider. Where a rating depends on severity — frequency of asthma attacks, pulmonary function testing, cancer staging — include the objective testing that supports it.
Step 5 — Submit VA Form 21-526EZ. File online at VA.gov, by mail, or through a VA-accredited representative, attaching every document gathered in the prior steps.
Working With an Accredited Representative
VA-accredited Veterans Service Organization representatives assist at no cost and can file on a veteran's behalf. Accredited claims agents and attorneys may charge fees, generally only after an initial denial. Accreditation status is verifiable through VA's Office of General Counsel directory before signing anything.
Keeping a Copy of Everything
Every page submitted should be retained. If a claim is later denied or appealed, the ability to show exactly what VA received — and when — is often the difference between rebuilding a file from scratch and pointing to a document already of record.
After Filing: The C&P Exam, the Decision, and the Appeal
VA reported that the average combined disability rating among service-connected K2 veterans exceeds 70 percent, across an average of 13.6 granted conditions. Reaching an accurate rating depends heavily on what happens after the claim is filed, and the compensation and pension examination is the single most influential event in that stretch. Many veterans treat the post-filing period as passive waiting. It is not. Mail gets opened, exams get scheduled, and development letters arrive with response deadlines attached.
The C&P Exam
A C&P examiner is measuring current severity, not deciding whether the veteran is credible. Symptoms should be described on their worst realistic days, including flare-ups, missed work, and functional limits, rather than on an unusually good day. The exam is frequently short, so the burden of communicating severity falls on the veteran. Bringing a short written symptom summary keeps the account consistent from question to question, and noting the date, examiner, and topics covered afterward preserves a record if the exam report later appears inaccurate. Missing the appointment without rescheduling can result in the claim being decided on the existing record alone, which usually means a lower outcome than the evidence supports.
Reading the Decision and Deciding Next Steps
The rating decision identifies each claimed condition, the outcome, the diagnostic code, the percentage assigned, and the effective date. A grant at a lower percentage than expected and an outright denial are different problems with different fixes. Under the Appeals Modernization Act, three lanes are available within one year of the decision: a Supplemental Claim when new and relevant evidence exists, a Higher-Level Review when the facts are right but the law was misapplied, and a Board appeal for review by a Veterans Law Judge. Choosing the lane that matches the actual defect in the decision is what shortens the road, and filing within the one-year window is what protects the original effective date.
Confirm Your K2 Claim Readiness
K2 service creates real presumptive rights, and the rules governing them are still being written — VA's proposed rule treating certain K2 exposures as a Toxic Exposure Risk Activity remains unfinished, and legislation on K2 coverage was still moving through Congress in 2026. That makes it worth checking whether a claim is built on the strongest current footing before it is filed. Take the free VA Claim Readiness Test at avoyvet.com and ask AVOY Veteran Navigator AI™ for educational guidance on presumptive eligibility, evidence gaps, and next steps for a K2 toxic exposure claim.
Frequently Asked Questions
Does serving at K2 automatically mean a VA disability rating?
No. Service at K2 creates a presumption of exposure to burn pits and other airborne hazards under the PACT Act, because Uzbekistan is a named presumptive location for service on or after September 11, 2001. A presumption of exposure is not a presumption of disability. A veteran still needs a current diagnosis of a qualifying condition, and the percentage is set by severity under the rating schedule. VA addressed this in its 2025 Federal Register notice, responding to veterans who asked that all K2 personnel automatically receive a rating. VA instead encourages every K2 veteran to file, reviewing each claim case by case across direct, secondary, and presumptive service connection.
Which conditions are presumptive for K2 veterans right now?
VA has confirmed that K2 veterans are covered by the PACT Act burn pit presumptions, and specifically named asthma, sinusitis, rhinitis, COPD, chronic bronchitis, squamous cell carcinoma, and brain, reproductive, and respiratory cancers among the conditions currently covered. The full burn pit presumptive list also includes constrictive bronchiolitis, emphysema, granulomatous disease, interstitial lung disease, pleuritis, pulmonary fibrosis, sarcoidosis, and a range of cancers including gastrointestinal, head and neck, kidney, lymphatic, lymphoma, melanoma, and pancreatic cancers. Because this list has changed several times since 2022 and continues to be reviewed, the current version on VA.gov should be checked before filing.
What about depleted uranium and radiation at K2?
VA's Public Health page states that Soviet missiles destroyed at the site years before U.S. occupation contaminated some surface dirt with low-level depleted uranium, while environmental assessments confirmed the absence of chemical warfare agents and ionizing radiation. In its October 2025 notice, VA stated there is no evidence that enriched uranium was present at K2. This remains contested. In February 2026, a bipartisan group of senators asked the Department of Defense to review and confirm the presence of radiation and toxic substances at K2 so that VA could act. Any K2 veteran concerned about depleted uranium can request the free urine assay through a VA Environmental Health Coordinator.
Can a condition that is not on the presumptive list still be granted?
Yes. VA stated in 2025 that it considers all avenues of service connection, including direct and secondary service connection, and that service connection is not limited to potential exposures. A direct claim requires three elements: a current diagnosis, an in-service event or exposure, and a medical opinion connecting the two. For K2 veterans the in-service exposure element is unusually well documented, because VA itself publishes the list of contaminants identified at the base. The missing piece in most denied non-presumptive claims is the medical opinion. A private opinion from a treating physician, written in terms of whether the condition is at least as likely as not related to the documented exposures, is what typically closes that gap.
Are survivors of K2 veterans eligible for anything?
Survivors may be eligible for benefits including Dependency and Indemnity Compensation when a veteran's death is connected to a service-connected condition. VA's August 2024 announcement about expanding access for K2 veterans expressly included survivors. Survivor claims follow their own forms and evidentiary rules, and they frequently depend on the medical evidence in the veteran's file, which is one more reason to keep a complete personal copy of every claim submission. Survivors should confirm current eligibility rules and filing deadlines on VA.gov or with a VA-accredited representative, since these rules are separate from the veteran's own compensation claim.
What is the K2 Surveillance Program and does it affect a claim?
The K2 Surveillance Program launched in the summer of 2022 and is operated by VA's Health Outcomes of Military Exposures office. It compares disease and death outcomes among K2 veterans against two comparison groups over a period VA has said will run ten or more years, and it was independently reviewed by the CDC's Agency for Toxic Substances and Disease Registry. It does not decide individual claims. Its significance is forward-looking: findings from the program feed VA's evaluation of whether additional conditions warrant presumptive status. VA has stated that to date it has found no evidence supporting an increased disease or mortality risk associated with K2 service, and that research is continuing.
Is it too late to file a K2 claim?
No deadline closes the door on filing a VA disability compensation claim for a K2-related condition, and a claim can be filed decades after separation. What time affects is back pay, not eligibility. Compensation generally runs from the effective date, usually tied to when the claim or an Intent to File was received, which is why filing VA Form 21-0966 early matters even when evidence is incomplete. Veterans previously denied for a condition that has since become presumptive should look at a Supplemental Claim, since a change in law can support reopening. Confirm current deadlines and effective-date rules on VA.gov.
Educational information only — not legal, medical, or claim representation, and not affiliated with the U.S. Department of Veterans Affairs. For help filing or appealing, contact a VA-accredited VSO (often free), claims agent, or attorney. For current rates, forms, and deadlines, see VA.gov.
