VA rates cancer differently than most other conditions: instead of one fixed percentage, most malignant conditions carry a mandatory 100% rating while the cancer is active — during surgery, radiation, chemotherapy, or another therapeutic procedure — followed by a re-evaluation once treatment ends. Here's how the rule works and where it applies.
The 100% active-treatment rule
Under VA's rating schedule (38 CFR Part 4), most malignant neoplasms are rated 100% for as long as the cancer is active and under treatment, regardless of the specific diagnostic code that applies to the cancer type. This isn't a rating you have to argue for — it's built into how VA structures cancer ratings across body systems, from diagnostic code 7343 (malignant neoplasms of the digestive system) to 7528 (malignant neoplasms of the genitourinary system) and their equivalents elsewhere in the schedule.
What happens after treatment ends
Six months after treatment concludes, VA is required to schedule a mandatory VA examination to determine whether the cancer is in remission, has recurred, has metastasized, or has left lasting residuals. If there's no recurrence, VA re-rates the condition based on whatever residual effects remain — this could mean a rating tied to organ dysfunction, or in some cases a reduction if there are no significant residuals. The six-month window exists specifically so the rating doesn't drop the moment active treatment stops, before the medical picture has stabilized.
Presumptive cancer pathways
Several exposure categories give certain cancers a presumptive service connection, meaning you don't have to independently prove the exposure caused the cancer if you meet the service and diagnosis criteria:
- Agent Orange / PACT Act presumptive cancers — including certain respiratory cancers, prostate cancer, and several others — for veterans who served in qualifying locations and periods. See our Agent Orange 2026 additions guide for the current presumptive list.
- Burn pit and airborne hazard exposure under the PACT Act, covering additional respiratory and other cancers for Gulf War and post-9/11 era veterans.
- Radiation-exposed veterans — those present at atmospheric nuclear tests, occupation of Hiroshima or Nagasaki, or specific underground testing — have a separate presumptive cancer list.
Cancers outside a presumptive category aren't automatically excluded — they just require direct evidence connecting the diagnosis to a specific in-service exposure or event, typically through a medical nexus opinion.
Secondary conditions from cancer treatment
Treatment side effects — chemotherapy-induced neuropathy, radiation damage to nearby organs, or complications from surgery — can qualify as secondary service-connected conditions in their own right, separate from the cancer rating itself. Document these as they develop; they don't automatically get added to your file.
Related condition guides
For ratings specific to individual cancer types already covered on this site, see our prostate cancer VA rating guide and melanoma and skin cancer VA rating guide. For how VA combines multiple ratings into one overall percentage, see the VA disability ratings pillar page.