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ICD-10-CM Code M31.1
Thrombotic microangiopathy

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

M31.1 is a billable ICD code used to specify a diagnosis of thrombotic microangiopathy. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code M311 is used to code Thrombotic microangiopathy

Thrombotic microangiopathy, abbreviated TMA, is a pathology that results in thrombosis in capillaries and arterioles, due to an endothelial injury. It may be seen in association with thrombocytopenia, anemia, purpura and renal failure.

Specialty: Rheumatology
ICD 9 Code: 446.6

Micrograph of thrombotic microangiopathy with the characteristic onion-skin layering seen in older lesions. PAS stain.

Source: Wikipedia

Coding Notes for M31.1 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Thrombotic thrombocytopenic purpura

MS-DRG Mapping

  • DRG Group #545-547 - Connective tissue disorders with MCC.
  • DRG Group #545-547 - Connective tissue disorders with CC.
  • DRG Group #545-547 - Connective tissue disorders without CC or MCC.

Related Concepts SNOMET-CT

  • Drug induced thrombotic thrombocytopenic purpura (disorder)

ICD-10-CM Alphabetical Index References for 'M31.1 - Thrombotic microangiopathy'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code M31.1. Click on any term below to browse the alphabetical index.


Thrombotic microangiopathy (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 446.6 was previously used, M31.1 is the appropriate modern ICD10 code.

Parent Code: M31 - Other necrotizing vasculopathies

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/M311