Excludes1 pair
E56- vs E64.8
E56 and E64.8 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on E56
sequelae of other vitamin deficiencies (E64.8)
E56
Other vitamin deficiencies
Not billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
E64.8
Sequelae of other nutritional deficiencies
Billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
Indexed under
- Sequelae › calcium deficiency
- Sequelae › niacin deficiency
- Sequelae › selenium deficiency
- Sequelae › thiamine deficiency
- Sequelae › vitamin deficiency NEC
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