Fermented foods (such as tempeh), nori, spirulina, chlorella algae, and unfortified nutritional yeast cannot be relied upon as adequate or practical sources of B-12.39,40 Vegans must regularly consume reliable sourcesmeaning B-12 fortified foods or B-12 containing supplementsor they could become deficient, as shown in case studies of vegan infants, children, and adults
Cardiovascular Health Certain B-Complex vitamins, such as B6, B12, and folic acid, are important for cardiovascular health, as they help to reduce the risk of heart disease
Coding Clinic has also noted that this convention does NOT override explicit provider documentation to the contrary
People can have vitamin B12 deficiency, folate deficiency, or both