Valid for Submission
D55.9 is a billable diagnosis code used to specify a medical diagnosis of anemia due to enzyme disorder, unspecified. The code D55.9 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code D55.9 might also be used to specify conditions or terms like anemia due to enzyme deficiency or chronic non-spherocytic hemolytic anemia.
Unspecified diagnosis codes like D55.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code D55.9 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Anemia due to enzyme deficiency
- Chronic non-spherocytic hemolytic anemia
Diagnostic Related Groups - MS-DRG Mapping
Convert D55.9 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code D55.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Also called: Iron poor blood
If you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron. Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to blood. It carries oxygen from the lungs to the rest of the body.
Anemia has three main causes: blood loss, lack of red blood cell production, and high rates of red blood cell destruction.
Conditions that may lead to anemia include
- Heavy periods
- Colon polyps or colon cancer
- Inherited disorders
- A diet that does not have enough iron, folic acid or vitamin B12
- Blood disorders such as sickle cell anemia and thalassemia, or cancer
- Aplastic anemia, a condition that can be inherited or acquired
- G6PD deficiency, a metabolic disorder
Anemia can make you feel tired, cold, dizzy, and irritable. You may be short of breath or have a headache.
Your doctor will diagnose anemia with a physical exam and blood tests. Treatment depends on the kind of anemia you have.
NIH: National Heart, Lung, and Blood Institute
- Anemia (Medical Encyclopedia)
- Anemia - B12 deficiency (Medical Encyclopedia)
- Anemia caused by low iron -- infants and toddlers (Medical Encyclopedia)
- Anemia of chronic disease (Medical Encyclopedia)
- Anemia of Inflammation and Chronic Disease - NIH
- Febrile/cold agglutinins (Medical Encyclopedia)
- Ferritin blood test (Medical Encyclopedia)
- Hemolytic anemia (Medical Encyclopedia)
- Iron deficiency anemia (Medical Encyclopedia)
- Pernicious anemia (Medical Encyclopedia)
- Vitamin B12 level (Medical Encyclopedia)
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