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ICD-10 Guide
ICD-10 CodesG37.89

G37.89

Billable

Other specified demyelinating diseases of central nervous system

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

Code Description

ICD-10 G37.89 is a billable code used to indicate a diagnosis of other specified demyelinating diseases of central nervous system.

Key Diagnostic Point:

G37.89 encompasses a variety of demyelinating diseases of the central nervous system (CNS) that do not fall under more specific categories like multiple sclerosis (MS). These conditions are characterized by the loss of myelin, the protective sheath surrounding nerve fibers, which can lead to a range of neurological symptoms. Commonly associated with autoimmune processes, demyelinating diseases can manifest in various forms, including acute disseminated encephalomyelitis (ADEM), neuromyelitis optica (NMO), and other atypical demyelinating syndromes. Symptoms may include visual disturbances, motor weakness, sensory changes, and cognitive dysfunction. Diagnosis typically involves clinical evaluation, MRI findings, and sometimes cerebrospinal fluid analysis. Treatment often includes immunomodulatory therapies aimed at reducing inflammation and preventing further demyelination. Understanding the nuances of these conditions is crucial for accurate coding and appropriate management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of conditions included under this code
  • Need for precise documentation to differentiate from other demyelinating diseases
  • Potential overlap with other neurological conditions
  • Variability in clinical presentation and treatment responses

Audit Risk Factors

  • Inadequate documentation of specific symptoms
  • Failure to specify the type of demyelinating disease
  • Misuse of related codes that may lead to incorrect billing
  • Inconsistent clinical findings in documentation

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Comprehensive neurological examination findings, MRI results, and treatment plans.

Common Clinical Scenarios

Diagnosis of atypical demyelinating syndromes, management of MS exacerbations.

Billing Considerations

Ensure clarity in the type of demyelinating disease to avoid coding errors.

Rehabilitation Medicine

Documentation Requirements

Functional assessments, therapy progress notes, and interdisciplinary care plans.

Common Clinical Scenarios

Rehabilitation following acute demyelinating episodes, management of chronic symptoms.

Billing Considerations

Documenting the impact of demyelination on functional abilities is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use G37.89 When
  • According to ICD
  • 10 guidelines, G37
  • 89 should be used when a specific demyelinating disease is not classified elsewhere
  • Coders must ensure that the documentation supports the diagnosis and that the condition is not better described by a more specific code

Exclusion Criteria

Do NOT use G37.89 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Office or other outpatient visit for the evaluation and management of an established patient

Clinical Scenario

Used for follow-up visits in patients with demyelinating diseases.

Documentation Requirements

Document history, examination findings, and treatment plan.

Specialty Considerations

Neurology specialists should ensure detailed neurological assessments are included.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of demyelinating diseases, improving the accuracy of diagnoses and treatment tracking. G37.89 provides a necessary code for conditions that do not fit neatly into other categories.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of demyelinating diseases, improving the accuracy of diagnoses and treatment tracking. G37.89 provides a necessary code for conditions that do not fit neatly into other categories.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of demyelinating diseases, improving the accuracy of diagnoses and treatment tracking. G37.89 provides a necessary code for conditions that do not fit neatly into other categories.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What conditions are included under G37.89?

G37.89 includes various demyelinating diseases of the CNS that are not classified under more specific codes, such as ADEM and NMO.

How do I differentiate between G37.89 and G35?

G35 is specifically for Multiple Sclerosis, while G37.89 is used for other demyelinating diseases. Documentation should clarify the diagnosis.