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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Infectious And Parasitic Diseases 001-139 > Viral Diseases Accompanied By Exanthem 050-057 > ICD-9-CM Diagnosis 052 Chickenpox A highly contagious infectious disease caused by the varicella-zoster virus (HERPESVIRUS 3, HUMAN). It usually affects children, is spread by direct contact or respiratory route via droplet nuclei, and is characterized by the appearance on the skin and mucous membranes of successive crops of typical pruritic vesicular lesions that are easily broken and become scabbed. Chickenpox is relatively benign in children, but may be complicated by pneumonia and encephalitis in adults. (From Dorland, 27th ed) 052 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 052.0 Postvaricella encephalitis Inflammation of brain tissue caused by infection with the varicella-zoster virus (HERPESVIRUS 3, HUMAN). This condition is associated with immunocompromised states, including the ACQUIRED IMMUNODEFICIENCY SYNDROME. Pathologically, the virus tends to induce a vasculopathy and infect oligodendrocytes and ependymal cells, leading to CEREBRAL INFARCTION, multifocal regions of demyelination, and periventricular necrosis. Manifestations of varicella encephalitis usually occur 5-7 days after onset of HERPES ZOSTER and include HEADACHE; VOMITING; lethargy; focal neurologic deficits; FEVER; and COMA. (From Joynt, Clinical Neurology, 1996, Ch 26, pp29-32; Hum Pathol 1996 Sep;27(9):927-38) 052.0 is a specific code that can be used to specify a diagnosis 052.0 contains 3 index entries ICD-9-CM Diagnosis 052.1 Varicella (hemorrhagic) pneumonitis 052.1 is a specific code that can be used to specify a diagnosis 052.1 contains 3 index entries ICD-9-CM Diagnosis 052.2 Postvaricella myelitis 052.2 is a specific code that can be used to specify a diagnosis 052.2 contains 2 index entries ICD-9-CM Diagnosis 052.7 Chickenpox with other specified complications 052.7 is a specific code that can be used to specify a diagnosis 052.7 contains 3 index entries ICD-9-CM Diagnosis 052.8 Chickenpox with unspecified complication 052.8 is a specific code that can be used to specify a diagnosis 052.8 contains 1 index entry ICD-9-CM Diagnosis 052.9 Varicella without complication A highly contagious infectious disease caused by the varicella-zoster virus (HERPESVIRUS 3, HUMAN). It usually affects children, is spread by direct contact or respiratory route via droplet nuclei, and is characterized by the appearance on the skin and mucous membranes of successive crops of typical pruritic vesicular lesions that are easily broken and become scabbed. Chickenpox is relatively benign in children, but may be complicated by pneumonia and encephalitis in adults. (From Dorland, 27th ed) 052.9 is a specific code that can be used to specify a diagnosis 052.9 contains 3 index entries