Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

324 billable diagnosis codes across 7 code blocks. FY2027 release.

Excludes 2 (not included here)

  • autoimmune disease (systemic) NOS (M35.9)
  • certain conditions originating in the perinatal period (P00-P96)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • human immunodeficiency virus [HIV] disease (B20)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

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 the spleen

D80-D89 Certain disorders involving the immune mechanism

Last reviewed: September 2026