ICD-10-CM
ICD-10 code for Congenital intrinsic factor deficiency: D51.0
The ICD-10-CM index points "Congenital intrinsic factor deficiency" to D51.0, Vitamin B12 deficiency anemia due to intrinsic factor deficiency. D51.0 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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