Excludes1 pair
E50- vs E64.1
E50 and E64.1 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 E50
sequelae of vitamin A deficiency (E64.1)
E50
Vitamin A deficiency
Not billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
E64.1
Sequelae of vitamin A deficiency
Billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
Indexed under
- Sequelae › vitamin deficiency NEC › A
- Deficiency, deficient › vitamin NOS › A › sequelae
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