ICD-9-CM Codes ICD-9-PCS Codes

446.20 - Hypersensitivity angiitis, unspecified

GEM Conversion to ICD-10 CM

M31.0

Fs: 10000 – Hypersensitivity angiitis

Sibling Codes

446.20

Hypersensitivity angiitis, unspecified

446.21

Goodpasture's syndrome

446.29

Other specified hypersensitivity angiitis

Parent Sibling Codes

446.0

Polyarteritis nodosa

446.1

Acute febrile mucocutaneous lymph node syndrome [MCLS]

446.3

Lethal midline granuloma

446.4

Wegener's granulomatosis

446.5

Giant cell arteritis

446.6

Thrombotic microangiopathy

446.7

Takayasu's disease