ICD-10-CM 2027
ICD-10 code for HSCT-TMA
Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]
From the official ICD-10-CM alphabetic index entry “HSCT-TMA (hematopoietic stem cell transplantation-associated thrombotic microangiopathy)”. Page updated September 29, 2026.
About coding HSCT-TMA
The ICD-10-CM code for HSCT-TMA is M31.11 (Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]).
Within M31.1 (thrombotic microangiopathy), M31.11 is specifically for hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]. Related codes cover unspecified (M31.10) and other thrombotic microangiopathy (M31.19).
Code first if applicable: complications of bone marrow transplant (T86.0-) and complications of stem cell transplant (T86.5).
Use an additional code to identify specific organ dysfunction, such as: acute kidney failure (N17.-), acute respiratory distress syndrome (J80), capillary leak syndrome (I78.8), diffuse alveolar hemorrhage (R04.89), encephalopathy (metabolic) (septic) (G93.41) and 7 more.
Common questions about HSCT-TMA ICD-10 codes
What is the ICD-10 code for HSCT-TMA?
- M31.11 — Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA].
Is M31.11 billable?
- Yes. M31.11 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M31.11 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M31.11 as a principal diagnosis.
Is M31.11 a CC or MCC?
- M31.11 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.