D51.8

What This Code Means

This code describes anemia (low red blood cell count) caused by vitamin B12 deficiency that doesn't fit into the more common categories like pernicious anemia or dietary deficiency. It includes rare or unusual forms of B12 deficiency anemia.

Coding Tips

• •Use this code only when the specific type of B12 deficiency anemia is documented but doesn't match D51.0 (pernicious anemia), D51.1 (vitamin B12 deficiency due to dietary causes), D51.2 (transcobalamin II deficiency), or D51.3 (vitamin B12 deficiency of other specified type)
• •Always investigate and document the underlying cause of B12 deficiency when possible, as this may affect treatment and management decisions