Vitamin B deficiency, unspecified

This code represents a general deficiency of any B vitamin when the specific type of B vitamin (e.g., B1, B6, B12) is not documented or known. It indicates a nutritional deficit impacting various metabolic and neurological functions without pinpointing the exact B vitamin involved.

Use this code when documentation indicates a vitamin B deficiency but does not specify which particular B vitamin is lacking. This may occur when laboratory tests show low levels of B vitamins collectively, or when clinical signs and symptoms suggest a B vitamin deficiency without further diagnostic specificity.

• Avoid using this code if the specific type of vitamin B deficiency is documented (e.g., B12 deficiency, B6 deficiency).
• Always query the provider for specificity if possible to identify the exact B vitamin deficient.
• Sequence this code as a secondary diagnosis if the primary reason for the encounter is a manifestation of the deficiency.