2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of Blood And Blood-Forming Organs 280-289 > ICD-9-CM Diagnosis 281 Other deficiency anemias 281 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 281.0 Pernicious anemia (per-NISH-us a-NEE-mee-a) A type of anemia (low red blood cell count) caused by the body's inability to absorb vitamin B12. A megaloblastic anemia occurring in children but more commonly in later life, characterized by histamine-fast achlorhydria, in which the laboratory and clinical manifestations are based on malabsorption of vitamin B 12 due to a failure of the gastric mucosa to secrete adequate and potent intrinsic factor. 281.0 is a specific code that can be used to specify a diagnosis 281.0 contains 20 index entries ICD-9-CM Diagnosis 281.1 Other vitamin b12 deficiency anemia 281.1 is a specific code that can be used to specify a diagnosis 281.1 contains 8 index entries ICD-9-CM Diagnosis 281.2 Folate-deficiency anemia 281.2 is a specific code that can be used to specify a diagnosis 281.2 contains 27 index entries ICD-9-CM Diagnosis 281.3 Other specified megaloblastic anemias not elsewhere classified 281.3 is a specific code that can be used to specify a diagnosis 281.3 contains 5 index entries ICD-9-CM Diagnosis 281.4 Protein-deficiency anemia 281.4 is a specific code that can be used to specify a diagnosis 281.4 contains 10 index entries ICD-9-CM Diagnosis 281.8 Anemia associated with other specified nutritional deficiency 281.8 is a specific code that can be used to specify a diagnosis 281.8 contains 9 index entries ICD-9-CM Diagnosis 281.9 Unspecified deficiency anemia A disorder characterized by the presence of ANEMIA, abnormally large red blood cells (megalocytes or macrocytes), and MEGALOBLASTS. Anemia characterized by larger than normal erythrocytes, increased mean corpuscular volume (MCV) and increased mean corpuscular hemoglobin (MCH). 281.9 is a specific code that can be used to specify a diagnosis 281.9 contains 11 index entries