446.6 THROMBOT MICROANGIOPATHY


Code Information

Diagnosis Code: 446.6

Short Description: Thrombot microangiopathy

Long Description: Thrombotic microangiopathy

Code Classification:

  • Diseases of the circulatory system (390–459)
    • Diseases of arteries, arterioles, and capillaries (440-449)
      • 446 Polyarteritis nodosa and allied conditions
        • 446.6 Thrombot microangiopathy

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 446.6 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Anemia 285.9
    • hemolytic 283.9
      • due to
        • thrombotic thrombocytopenic purpura 446.6
  • Baehr-Schiffrin disease (thrombotic thrombocytopenic purpura) 446.6
  • Disease, diseased - see also Syndrome
    • Baehr-Schiffrin (thrombotic thrombocytopenic purpura) 446.6
  • Microangiopathy 443.9
    • thrombotic 446.6
      • Moschcowitz's (thrombotic thrombocytopenic purpura) 446.6
  • Moschcowitz's syndrome (thrombotic thrombocytopenic purpura) 446.6
  • Purpura 287.2
    • thrombocytopenic (see also Thrombocytopenia) 287.30
      • thrombotic 446.6
    • thrombotic 446.6
      • thrombocytic 446.6
      • thrombocytopenic 446.6
  • Syndrome - see also Disease
    • disseminated platelet thrombosis 446.6
    • Moschcowitz (-Singer-Symmers) (thrombotic thrombocytopenic purpura) 446.6
  • Thrombocytopenia, thrombocytopenic 287.5
    • purpura (see also Purpura, thrombocytopenic) 287.30
      • thrombotic 446.6
  • Thrombosis, thrombotic (marantic) (multiple) (progressive) (vein) (vessel) 453.9
    • arteriolar-capillary platelet, disseminated 446.6
    • capillary 448.9
      • arteriolar, generalized 446.6
    • platelet 446.6

Crosswalk Information

The code 446.6 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
446.6 Right Arrow M31.1 Thrombotic microangiopathy
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
446.0 Polyarteritis nodosa
446.1 Acute febrile mucocutaneous lymph node syndrome [MCLS]
446.20 Hypersensitivity angiitis, unspecified
446.21 Goodpasture's syndrome
446.29 Other specified hypersensitivity angiitis
446.3 Lethal midline granuloma
446.4 Wegener's granulomatosis
446.5 Giant cell arteritis
446.7 Takayasu's disease


This page was last updated on: 10/1/2014