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HomeICD-10 CodesA81
ICD-10-CM
Non-billable

A81

Classification
Category:Certain infectious and parasitic diseases
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Coding Guidance
A81 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.
Includes
From A00-B99
Excludes 1
From A00-B99
Excludes 2
From A00-B99
Use Additional Code
From A00-B99

More Specific Codes

A81.0
Creutzfeldt-Jakob disease
A81.1
Subacute sclerosing panencephalitis
A81.2
Progressive multifocal leukoencephalopathy
A81.8
Other atypical virus infections of central nervous system
A81.9
Atypical virus infection of central nervous system, unspecified

External Resources

2025 ICD-10 guidelines from CMS.gov