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ICD-10 Guide
ICD-10 CodesChapter 6: Diseases of the nervous systemG65

G65

Billable

Sequelae of inflammatory and toxic polyneuropathies

Chapter 6:Diseases of the nervous system

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

Code Description

ICD-10 G65 is a billable code used to indicate a diagnosis of sequelae of inflammatory and toxic polyneuropathies.

Key Diagnostic Point:

G65 refers to the sequelae resulting from inflammatory and toxic polyneuropathies, which are conditions characterized by damage to multiple peripheral nerves due to inflammation or exposure to toxic substances. These sequelae can manifest as persistent symptoms following the initial insult, including weakness, sensory loss, and neuropathic pain. Patients may experience difficulties in motor function, coordination, and balance, leading to significant impairment in daily activities. The underlying causes of these polyneuropathies can vary widely, including autoimmune disorders, infections, exposure to heavy metals, and certain medications. The sequelae may present as chronic pain syndromes, residual weakness, or sensory disturbances, which can complicate the patient's recovery and require ongoing management. Accurate coding of G65 is essential for appropriate treatment planning and resource allocation, as it reflects the long-term impact of the initial neuropathic condition on the patient's quality of life.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes leading to polyneuropathy
  • Need for detailed documentation of prior conditions
  • Potential overlap with other neurological disorders
  • Variability in patient presentation and symptomatology

Audit Risk Factors

  • Inadequate documentation of prior inflammatory or toxic events
  • Failure to specify the nature of sequelae
  • Misclassification of symptoms as primary rather than sequelae
  • Lack of follow-up documentation on patient progress

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed history of neurological symptoms, prior diagnoses, and treatment responses.

Common Clinical Scenarios

Patients presenting with chronic pain, weakness, or sensory disturbances following a known inflammatory or toxic event.

Billing Considerations

Neurologists should ensure that all relevant prior conditions and treatments are documented to support the diagnosis of sequelae.

Rehabilitation Medicine

Documentation Requirements

Functional assessments, treatment plans, and progress notes detailing the impact of sequelae on daily living.

Common Clinical Scenarios

Patients requiring rehabilitation for motor deficits or pain management following polyneuropathy.

Billing Considerations

Rehabilitation specialists must document the functional limitations caused by the sequelae to justify therapy services.

Coding Guidelines

Inclusion Criteria

Use G65 When
  • According to ICD
  • 10 guidelines, G65 should be used when the patient has a documented history of inflammatory or toxic polyneuropathy and is experiencing ongoing symptoms as a result
  • It is important to ensure that the sequelae are clearly linked to the prior condition

Exclusion Criteria

Do NOT use G65 When
No specific exclusions found.

Related CPT Codes

95886CPT Code

Nerve conduction studies

Clinical Scenario

Used to assess the extent of nerve damage in patients with sequelae of polyneuropathy.

Documentation Requirements

Document the clinical rationale for the study and the specific nerves tested.

Specialty Considerations

Neurologists should ensure that the findings correlate with the diagnosis of sequelae.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of sequelae, enabling better tracking of long-term outcomes and resource allocation for patients with complex neurological conditions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of sequelae, enabling better tracking of long-term outcomes and resource allocation for patients with complex neurological conditions.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of sequelae, enabling better tracking of long-term outcomes and resource allocation for patients with complex neurological conditions.

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 are the common causes of inflammatory and toxic polyneuropathies?

Common causes include autoimmune diseases, infections, exposure to toxins such as heavy metals, and certain medications that can lead to nerve damage.

How do I differentiate between G65 and G62 codes?

G65 is specifically for sequelae of inflammatory and toxic polyneuropathies, while G62 codes are used for polyneuropathies due to systemic diseases or unspecified causes.