Scar tissue binding the heart's protective sac to the heart muscle that may restrict heart movement.
Because this condition is rated by MET level and symptom onset, the most useful medical evidence is exercise testing that documents the workload at which symptoms appear. If testing cannot be done for medical reasons, a medical examiner's written estimate of your MET capacity — supported by specific activity examples — can substitute.
For the 30% level, imaging records matter as well. An echocardiogram, multigated acquisition scan, or MRI showing cardiac hypertrophy or dilatation can support that rating even without a MET measurement. For the 10% level, pharmacy records or treating physician notes that show continuous medication is required for control are relevant.
Cardiology records, primary care notes, and hospitalization records that document symptoms such as breathlessness, fatigue, angina, dizziness, arrhythmia, palpitations, or syncope help connect your condition to a specific rating level. Statements from you or people who know you that describe how these symptoms affect physical activity in daily life and work can also help show how your functional capacity lines up with the MET thresholds in the formula.
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.