Congenital dyserythropoietic anemia

This code identifies a rare, inherited group of disorders characterized by ineffective red blood cell production in the bone marrow, leading to chronic anemia. Despite increased red blood cell precursors, the cells are defective and prematurely destroyed, resulting in insufficient mature red blood cells in circulation.

Assign this code when documentation explicitly states a diagnosis of congenital dyserythropoietic anemia (CDA), specifying one of its types (e.g., CDA Type I, II, or III). This diagnosis is typically confirmed through bone marrow biopsy, genetic testing, and characteristic red blood cell morphology.

• Do not code this with Blackfan-Diamond syndrome (D61.01) or Di Guglielmo's disease (C94.0) due to Excludes1 notes.
• Ensure the documentation specifies "congenital" dyserythropoietic anemia to differentiate from acquired forms.
• Look for specific CDA types (e.g., Type I, II, III) in the documentation; if specified, this code still applies as it is the most specific available.