10% (DC 7117, real floor -- not 0 percent)
Next: 20%Characteristic attacks occurring one to three times a week.
What separates the next level: 20 percent applies once attacks occur four to six times a week instead.
Review CFR criteria, examples, and evidence
- Official CFR language
- Characteristic attacks occurring one to three times a week -- 10.
- Qualification explanation
- Reached once characteristic attacks are documented at this minimum frequency.
- Examples
- Records document color-change episodes in the fingers occurring twice a week, precipitated by cold exposure.
- Medical evidence
- Artery and Vein Conditions DBQ; Records documenting attack frequency
- Functional impact examples
- Occasional characteristic attacks, at the lower end of the documented frequency range.
- Common misconceptions
- Confirmed via two independent primary sources: DC 7117 has NO 0 percent tier at all -- attacks less frequent than weekly do not resolve to 0 percent, they simply do not meet this code's threshold.
- Related topics
- mutual-exclusivity
- Source context
- 38 CFR 4.104; 7117; Current DC 7117 educational pathway. No pending rulemaking found touching this range (RSCH-040).