D68.4 vs E56.1
D68.4 and E56.1 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on E56.1
deficiency of coagulation factor due to vitamin K deficiency (D68.4)
D68.4
Acquired coagulation factor deficiency
Billable
- Chapter 3
- Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Section
- D65-D69
Use when the record says
- Deficiency of coagulation factor due to liver disease
- Deficiency of coagulation factor due to vitamin K deficiency
Indexed under
- Hyperprothrombinemia, causing coagulation factor deficiency
- Fibrinopenia › acquired (hereditary)
- Hemophilia › calcipriva (classical) (familial) (hereditary)
- Hemophilia › nonfamilial (classical) (familial) (hereditary)
- Hypoprothrombinemia › acquired (congenital) (hereditary) (idiopathic)
E56.1
Deficiency of vitamin K
Billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
Indexed under
- Menadione deficiency
- Avitaminosis › K (multiple)
- Deficiency, deficient › menadione
- Deficiency, deficient › vitaminNOS › K
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027