transitive verb. 1  To keep up or carry on; continue: maintain good relations. 2  To keep in an existing state; preserve or retain: maintain one's composure. 3  To keep in a condition of good repair or efficiency: maintain two cars.
Anemia is usually classified based on the size of RBCs, as measured by the mean corpuscular volume (MCV). Anemia can be microcytic (MCV typically less than 80 Î¼m3 [80 fL]), normocytic (80 to 100 Î¼m3 [80 to 100 fL]), or macrocytic (greater than 100 Î¼m3 [100 fL]).
Anemia, unspecified. 1  Short description: Anemia NOS. 2  ICD-9-CM 285.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 285.9 should only be used for claims with a date of service on or before September 30, 2015. 3  You are viewing the 2012 version of ICD-9-CM 285. 9.