289.7 Methemoglobinemia
Congenital NADH [DPNH]-methemoglobin-reductase deficiency
Hemoglobin M [Hb-M] disease
Methemoglobinemia:
NOS
acquired (with sulfhemoglobinemia)
hereditary
toxic
Stokvis' disease
Sulfhemoglobinemia
Use additional E code to identify cause