A 71-year-old man is being actively treated for acute monocytic leukemia (AML). He has developed thrombocytopenia as a result of the chemotherapy to treat the AML and is admitted to home health for management of the condition.
| Primary and Secondary Diagnoses | Code |
| M1021a: Other secondary thrombocytopenia | D69.59 |
| M1023b: Adverse effect of antineoplastic and immunosuppressive drug, subsequent encounter | T45.1x5D |
| M1023c: Acute monoblastic/monocytic leukemia, not having achieved remission | C93.00 |
Rationale:
- Code drug-induced thrombocytopenia with D69.59, according to the alphabetic index. Capture that it is an adverse effect of his chemotherapy treatment by also coding T45.1x5D.
- Code the thrombocytopenia before the T code for the drug because it is an adverse effect and not a poisoning, in accordance with coding guidelines.
- The correct code for the leukemia is C93.00, since the patient is undergoing active treatment for AML and remission has not been achieved.