D50-D89
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Chapter coding notes
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)
Blocks in this chapter
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
Official Guidelines for Chapter 3
FY 2026 ›Sections that reference codes in Chapter 3
- I.C.1.a.2)(b)Patient admitted for HIV-related conditionD59.31Chapter 1 guidance
- I.C.1.d.9)Hemolytic-uremic syndrome associated with sepsisD59.31Chapter 1 guidance
- I.C.2.c.1)Anemia associated with malignancyD63.0Chapter 2 guidance
- I.C.2.l.4)Encounter for complication associated with a neoplasmD63.0Chapter 2 guidance