The VA disability rating for chronic lymphocytic leukemia is 100% during active disease and any phase of treatment, and that rating continues for six months after treatment ends. At the six-month mark, the VA re-examines you and rates whatever the disease and its treatment left behind, condition by condition. The most reliable path to approval is presumptive service connection: if you served in a location and time period the VA links to Agent Orange or burn pit exposure, you do not have to prove your CLL was caused by service.
How the 100% Rating Works
CLL is rated under Diagnostic Code 7703 in the VA’s Schedule for Rating Disabilities. The 100% rating covers any active treatment phase, whether that is chemotherapy, radiation, targeted drug therapy, immunotherapy, or any other therapeutic procedure. The rating stays at 100% for six months after treatment stops, at which point the VA schedules a mandatory re-examination.1eCFR. 38 CFR 4.117 – Schedule of Ratings, Hemic and Lymphatic Systems
Symptomatic CLL at Rai Stage I through IV is treated the same as active leukemia and receives the 100% rating. Asymptomatic CLL at Rai Stage 0, or the precursor condition monoclonal B-cell lymphocytosis (MBL), receives a 0% rating.1eCFR. 38 CFR 4.117 – Schedule of Ratings, Hemic and Lymphatic Systems A 0% rating pays no monthly compensation, but it does establish service connection and comes with a higher priority group for VA healthcare, which matters if the disease progresses later.
What Happens After Treatment Ends
The post-treatment re-evaluation is where compensation often changes, and it surprises veterans who expect a single ongoing CLL rating. Once the six-month period closes and if there has been no recurrence, the VA does not assign a fixed number for CLL itself. Instead, the examiner assesses each residual condition and rates it under the diagnostic code that fits.
If chemotherapy left you with anemia, that is rated under the anemia codes. If you developed peripheral neuropathy from treatment, that gets a neurological rating. Fatigue severe enough to affect daily functioning can factor in as well. Each residual receives its own percentage, and the VA combines them using its combined ratings formula, which is not simple addition, to produce an overall figure. Thorough medical records during and after treatment matter for this reason: every documented residual is a potential rating.
If the disease returns, you move back to the 100% rating during the new treatment phase, and the six-month clock restarts when that treatment ends.
Presumptive Service Connection Through Herbicide Exposure
The VA presumes CLL was caused by military service for veterans exposed to tactical herbicides such as Agent Orange. Federal regulations list “all chronic B-cell leukemias (including, but not limited to, hairy-cell leukemia and chronic lymphocytic leukemia)” among the diseases linked to herbicide agents.2eCFR. 38 CFR 3.309 – Disease Subject to Presumptive Service Connection With a presumptive claim, you need two things: a confirmed CLL diagnosis and proof of service in a qualifying location during a qualifying time. No nexus letter required.
Qualifying herbicide-exposure locations and dates:
- Republic of Vietnam, January 9, 1962 through May 7, 1975, including service in offshore waters or other locations involving duty or visitation in Vietnam.3eCFR. 38 CFR 3.307 – Presumptive Service Connection for Chronic, Tropical, and POW-Related Disease, Disease Associated With Exposure to Certain Herbicide Agents
- Korean DMZ, April 1, 1968 through August 31, 1971, in a unit the Department of Defense has confirmed operated in or near the DMZ where herbicides were applied.3eCFR. 38 CFR 3.307 – Presumptive Service Connection for Chronic, Tropical, and POW-Related Disease, Disease Associated With Exposure to Certain Herbicide Agents
- Thailand, any U.S. or Royal Thai military base, January 9, 1962 through June 30, 1976.4Veterans Affairs. The PACT Act and Your VA Benefits
- Guam, American Samoa, Johnston Atoll, and parts of Laos and Cambodia during specific date ranges.4Veterans Affairs. The PACT Act and Your VA Benefits
The PACT Act, signed in 2022, added Thailand, Guam, American Samoa, Johnston Atoll, and parts of Laos and Cambodia to the Agent Orange presumptive list, opening claims for veterans previously denied because their service location was not recognized.
Burn Pit Exposure Under the PACT Act
The PACT Act also established presumptive exposure to burn pits and other airborne hazards. Qualifying locations include Iraq, Kuwait, Saudi Arabia, Bahrain, Oman, Qatar, Somalia, and the United Arab Emirates for service on or after August 2, 1990, and Afghanistan, Djibouti, Egypt, Jordan, Lebanon, Syria, Uzbekistan, and Yemen for service on or after September 11, 2001.4Veterans Affairs. The PACT Act and Your VA Benefits The presumptive cancers for burn pit exposure include “lymphoma of any type,” which matters because CLL and small lymphocytic lymphoma (SLL) are classified as the same disease. If you served in a burn pit location and developed CLL, this is a path worth raising with an accredited Veterans Service Organization representative.
Direct Service Connection If Presumption Does Not Apply
If your service does not fit a presumptive category, you can still pursue direct service connection. This route requires medical evidence linking your CLL to a specific in-service event or exposure, such as radiation, industrial chemicals, or contaminated water.
The core piece of evidence is a nexus letter from a qualified medical provider stating that your CLL is “at least as likely as not” connected to your military service. That exact phrasing tracks the VA’s standard of proof: a 50% or greater probability. Letters that say the condition “could be” or “may be” related to service generally fail. A strong letter identifies the specific exposure, explains the medical mechanism linking that exposure to CLL, references the service treatment records the provider reviewed, and addresses why other potential causes do not better explain the diagnosis. Private nexus letters typically cost between $650 and $3,000 depending on complexity.
TDIU When You Cannot Work
If CLL or its residual effects keep you from holding a steady job but your combined rating is below 100%, you may qualify for Total Disability Based on Individual Unemployability. TDIU pays at the 100% rate even when the schedular rating is lower. For 2026, the 100% rate for a veteran with no dependents is $3,938.58 per month.5Veterans Affairs. Current Veterans Disability Compensation Rates
To qualify on a schedular basis, you need either a single service-connected disability rated at 60% or higher, or a combined rating of 70% or more with at least one disability rated at 40% or higher.6eCFR. 38 CFR 4.16 – Total Disability Ratings for Compensation Based on Unemployability of the Individual File using VA Form 21-8940; your most recent employer completes VA Form 21-4192.7Veterans Affairs. Veteran’s Application for Increased Compensation Based on Unemployability Veterans who do not meet the schedular thresholds can be referred for an extraschedular evaluation if the evidence shows they genuinely cannot work.
Evidence and Filing
Before filing the formal claim, consider submitting an Intent to File using VA Form 21-0966. This locks in a potential effective date and gives you up to one year to complete the application.8Veterans Affairs. Your Intent to File a VA Claim Miss the one-year deadline and the earlier date disappears; your effective date becomes whenever the VA receives the completed claim. Starting the application online at VA.gov can automatically create the Intent to File.
The formal application is VA Form 21-526EZ.9Veterans Affairs. About VA Form 21-526EZ Whether you submit online, by mail, or through an accredited VSO, the supporting evidence should include:
- Pathology or biopsy reports confirming the CLL diagnosis.
- Treatment records showing the type, frequency, and duration of therapy. These map directly to the 100% rating under DC 7703.
- Your DD-214 and service personnel records, which establish where and when you served. Missing records can be requested through the National Archives.10Veterans Affairs. Request Your Military Service Records11National Archives. DD Form 214 – Discharge Papers and Separation Documents
- Personal statements describing fatigue, susceptibility to infections, weight changes, and treatment side effects. Clinical records rarely capture functional impact on their own.
- A nexus letter, for non-presumptive claims. Buddy statements corroborating hazardous exposure can also help.
Submitting a “fully developed claim” with all evidence up front reduces the chance of delays; incomplete claims get sent back for development, adding months.
The C&P Exam
The VA will likely schedule a Compensation and Pension exam to verify your diagnosis and current severity, even for presumptive claims.12Department of Veterans Affairs. VA Claim Exam The examiner uses the Disability Benefits Questionnaire for Hematologic and Lymphatic Conditions and documents diagnosis and date, disease course, whether you are in active treatment or watchful waiting, continuous medications, and whether you have developed anemia or thrombocytopenia from CLL or its treatment.13Department of Veterans Affairs. Hematologic and Lymphatic Conditions, Including Leukemia Disability Benefits Questionnaire
Do not downplay symptoms at the exam. If fatigue limits your workday, say so. If infections have become more frequent, describe the pattern. Underreporting at a C&P exam is one of the most common reasons veterans end up with a rating lower than the condition warrants.
If the Rating Seems Wrong
A denial or an unexpectedly low rating opens three review options:14Veterans Affairs. Choosing a Decision Review Option
- Supplemental Claim, when you have new evidence the VA did not consider, such as updated medical records or a stronger nexus letter.
- Higher-Level Review, when you believe the VA erred on the evidence already in the file. A senior reviewer looks at the same record and cannot consider anything new.
- Board Appeal, when you want a Veterans Law Judge at the Board of Veterans’ Appeals to review the case.
Higher-Level Reviews and Board Appeals must be filed within one year of the date on your decision letter. After that, a Supplemental Claim with new and relevant evidence is the remaining path.14Veterans Affairs. Choosing a Decision Review Option
Protection at the Six-Month Re-Evaluation
The mandatory re-examination after treatment worries many veterans, but the VA cannot simply drop your rating. Before any reduction that would lower your compensation, the VA must send written notice explaining the proposed reduction and the reasons, then give you 60 days to submit evidence showing the current rating should continue.15eCFR. 38 CFR 3.105 – Revision of Decisions
You also have the right to request a predetermination hearing within 30 days of the notice. If you request one, your benefits continue at the current level until the hearing concludes and a final decision is issued. The hearing is conducted by VA personnel who were not involved in proposing the reduction.15eCFR. 38 CFR 3.105 – Revision of Decisions Because CLL can move between remission and active disease, staying current with oncology appointments and keeping records of symptoms between visits gives you the strongest position at any re-evaluation.