ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesA81.00

A81.00

Creutzfeldt-Jakob disease, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A81.00 is a billable code used to indicate a diagnosis of creutzfeldt-jakob disease, unspecified.

Key Diagnostic Point:

Creutzfeldt-Jakob disease (CJD) is a rare and fatal neurodegenerative disorder caused by prions, which are misfolded proteins that induce abnormal folding of normal cellular proteins in the brain. This leads to brain damage and the characteristic symptoms of CJD, including rapidly progressive dementia, ataxia, and myoclonus. The disease typically presents in middle to late adulthood, with a median onset age of 68 years. Patients may initially exhibit psychiatric symptoms, such as depression or anxiety, followed by cognitive decline and neurological deficits. The disease progresses rapidly, often leading to severe disability and death within months to a few years after symptom onset. Diagnosis is primarily clinical, supported by MRI findings, EEG changes, and cerebrospinal fluid analysis for 14-3-3 protein. There are no effective treatments, and management focuses on supportive care. CJD is classified into several forms, including sporadic, familial, and acquired (iatrogenic or variant), but this code is used when the specific type is not specified.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other prion diseases
  • Need for comprehensive clinical documentation
  • Potential overlap with other neurological disorders
  • Variability in presentation and progression

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Misclassification of prion diseases
  • Failure to specify the type of CJD
  • Lack of supporting diagnostic tests

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, imaging results, and laboratory test outcomes.

Common Clinical Scenarios

Patients presenting with rapid cognitive decline, myoclonus, or ataxia.

Billing Considerations

Ensure all relevant diagnostic criteria are documented to support the diagnosis of CJD.

Infectious Disease

Documentation Requirements

History of potential exposure to prion diseases, including surgical history and dietary habits.

Common Clinical Scenarios

Patients with a history of exposure to infected tissues or blood products.

Billing Considerations

Document any relevant travel history or potential zoonotic exposure.

Coding Guidelines

Inclusion Criteria

Use A81.00 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include any relevant diagnostic tests and imaging results

Exclusion Criteria

Do NOT use A81.00 When
  • Exclude other prion diseases when coding A81

Related CPT Codes

95816CPT Code

Electroencephalogram (EEG)

Clinical Scenario

Used to assess for abnormal brain activity in suspected CJD cases.

Documentation Requirements

Document the indication for EEG and findings.

Specialty Considerations

Neurologists should ensure EEG findings correlate with clinical symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of prion diseases, improving the accuracy of epidemiological data and facilitating better tracking of these rare conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of prion diseases, improving the accuracy of epidemiological data and facilitating better tracking of these rare conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of prion diseases, improving the accuracy of epidemiological data and facilitating better tracking of these rare conditions.

Resources

Clinical References

  • •
    CDC Prion Disease Information

Coding & Billing References

  • •
    CDC Prion Disease Information

Frequently Asked Questions

What are the common symptoms of Creutzfeldt-Jakob disease?

Common symptoms include rapidly progressive dementia, ataxia, myoclonus, and visual disturbances. Patients may also experience personality changes and psychiatric symptoms.