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 of unspecified behavior of optic nerve (D49.7)
 * D49.81 Neoplasm of unspecified behavior of retina and choroid
 * Dark area on retina
 * Retinal freckle
 * D49.89 Neoplasm of unspecified behavior of other specified sites
 * D49.9 Neoplasm of unspecified behavior of unspecifiedsite



 =Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)=
 * Excludes2: autoimmune disease (systemic) NOS (M35.9)
 * certain conditions originating in the perinatal period (P00-P96)
 * complications of pregnancy, childbirth and the puerperium (O00-O99)
 * congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
 * endocrine, nutritional and metabolic diseases (E00-E90)
 * human immunodeficiency virus [HIV] disease (B20)
 * injury, poisoning and certain other consequences of external causes (S00-T98)
 * neoplasms (C00-D49)
 * symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)


 * This chapter contains the following blocks:
 * D50-D53 Nutritional anemias
 * D55-D59 Hemolytic anemias
 * D60-D64 Aplastic and other anemias and other bone marrow failure syndromes
 * D65-D69 Coagulation defects, purpura and other hemorrhagic conditions
 * D70-D77 Other disorders of blood and blood-forming organs
 * D78 Intraoperative and postprocedural complications of spleen
 * D80-D89 Certain disorders involving the immune mechanism

=Nutritional anemias (D50-D53)=

D50 Iron deficiency anemia

 * Includes: asiderotic anemia
 * hypochromic anemia
 * D50.0 Iron deficiency anemia secondary to blood loss (chronic)
 * Posthemorrhagic anemia (chronic)
 * Excludes1: acute posthemorrhagic anemia (D62)

