M31.11 – Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]

ICD-10-CM 2027 diagnosis code · Systemic connective tissue disorders

Billable code

ICD-10-CM code M31.11
Code
M31.11 (claims format: M3111)
Description
Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]
Short description
Hematpoetc stem cell txpltation-assoc throm microangiopathy
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block
M30-M36 Systemic connective tissue disorders
Parent codes
M31 › M31.1

Notes for M31.11

Applicable to:
  • Transplant-associated thrombotic microangiopathy [TA-TMA]
Code first:
  • if applicable:
  • complications of bone marrow transplant (T86.0-)
  • complications of stem cell transplant (T86.5)
Use additional code:
  • 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)
  • fluid overload, unspecified (E87.70)
  • graft versus host disease (D89.81-)
  • hemolytic uremic syndrome (D59.3-)
  • hepatic failure (K72.-)
  • hepatic veno-occlusive disease (K76.5)
  • idiopathic interstitial pneumonia (J84.11-)
  • sinusoidal obstruction syndrome (K76.5)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block M30-M36

Includes:
  • autoimmune disease NOS
  • collagen (vascular) disease NOS
  • systemic autoimmune disease
  • systemic collagen (vascular) disease
Excludes1 (not coded here):
  • autoimmune disease, single organ or single cell-type -code to relevant condition category

Index terms for M31.11

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M31.1

Frequently asked questions

What is ICD-10 code M31.11?

M31.11 is the ICD-10-CM code for hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA], in the block M30-M36 (Systemic connective tissue disorders).

Is M31.11 a billable code?

Yes. M31.11 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M31.11 belong to?

It belongs to category M31 – Other necrotizing vasculopathies.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.