Anemia in other chronic diseases classified elsewhere

This code signifies anemia that arises as a complication or manifestation of another underlying chronic disease. It is used when the anemia is not inherently part of the primary disease's diagnostic criteria but is a secondary consequence. This typically involves conditions where chronic inflammation, renal dysfunction, or other systemic factors contribute to decreased red blood cell production or increased destruction.

Apply this code when documentation clearly links the anemia to a specific chronic condition, such as chronic kidney disease, rheumatoid arthritis, or inflammatory bowel disease. The physician's notes should explicitly state the association, for example, "anemia secondary to chronic kidney disease" or "anemia of chronic disease in patient with lupus." This code is appropriate when the anemia is not specified as iron deficiency, vitamin deficiency, or another specific type of anemia.

• Always sequence the underlying chronic disease first, followed by this anemia code.
• Do not use this code for anemia due to acute blood loss or specific nutritional deficiencies (e.g., iron, B12), which have their own distinct codes.
• Ensure the documentation specifies the chronic disease causing the anemia; "anemia of chronic disease" alone is generally sufficient if the underlying chronic condition is also documented and coded.