Excludes1 pair
D55.0 vs D75.A
D55.0 and D75.A 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 D55.0
glucose-6-phosphate dehydrogenase (G6PD) deficiency without anemia (D75.A)
D55.0
Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency
Billable
- Chapter 3
- Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Section
- D55-D59
Use when the record says
- Favism
- G6PD deficiency anemia
Indexed under
- Favism (anemia)
- Anemia › Baghdad spring
- Anemia › favism
- Anemia › glucose-6-phosphate dehydrogenase deficiency (G6PD)
- Poisoning › fava bean
D75.A
Glucose-6-phosphate dehydrogenase (G6PD) deficiency without anemia
Billable
- Chapter 3
- Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Section
- D70-D77
Indexed under
- Deficiency, deficient › glucose-6-phosphate dehydrogenase › without anemia
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