Cancer that develops in the breast tissue.
During active treatment, medical records confirming the diagnosis and documenting ongoing surgical, radiation, chemotherapy, or other therapeutic care are the core evidence for the 100 percent rating. Pathology reports, oncology notes, and treatment summaries all speak directly to whether active treatment is underway.
After treatment ends, the mandatory VA examination will assess residual impairment, but your own medical records and treating-physician notes matter too. For limited arm, shoulder, or wrist motion, range-of-motion measurements from physical therapy or orthopedic records are relevant. For lymphedema, records showing swelling, its severity, and its effect on limb use are helpful. For scars or disfigurement, photographs and clinical descriptions of the affected area support the record. For reduced grip strength or loss of sensation, objective testing documented by a provider is directly tied to those rating criteria. Statements from you or people who know you describing how these residuals affect your daily activities, ability to lift or carry, or ability to work connect the medical findings to your actual functional loss.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.
