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v1.0.0
ICD-10 Guide
ICD-10 CodesR29.704

R29.704

NIHSS score 4

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R29.704 is a billable code used to indicate a diagnosis of nihss score 4.

Key Diagnostic Point:

The NIHSS (National Institutes of Health Stroke Scale) score of 4 indicates a mild to moderate stroke, characterized by specific neurological deficits. Patients with this score may exhibit symptoms such as slight weakness in one arm or leg, mild aphasia, or minor visual field deficits. The NIHSS is a critical tool used to assess the severity of stroke and guide treatment decisions. A score of 4 suggests that the patient has some functional impairment but is not severely disabled. Common causes of such a score include ischemic strokes, transient ischemic attacks (TIAs), or hemorrhagic strokes. The assessment involves a comprehensive neurological examination, including evaluation of consciousness, language, motor function, and sensory perception. Accurate documentation of the patient's neurological status and the specific deficits observed is essential for coding and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptom presentation among patients
  • Need for precise documentation of neurological deficits
  • Potential overlap with other stroke severity codes
  • Importance of timely assessment and scoring

Audit Risk Factors

  • Inadequate documentation of neurological assessments
  • Failure to specify the type of stroke
  • Misinterpretation of NIHSS scores
  • Inconsistent coding practices across providers

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed documentation of neurological deficits, including specific NIHSS components assessed.

Common Clinical Scenarios

Patients presenting with mild stroke symptoms in an outpatient or inpatient setting.

Billing Considerations

Ensure that all components of the NIHSS are documented to support the score assigned.

Emergency Medicine

Documentation Requirements

Immediate and thorough documentation of the patient's neurological status upon arrival.

Common Clinical Scenarios

Acute stroke presentations requiring rapid assessment and intervention.

Billing Considerations

Timeliness of documentation is critical; ensure that the NIHSS score is recorded promptly.

Coding Guidelines

Inclusion Criteria

Use R29.704 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the NIHSS score is documented accurately and reflects the patient's clinical status
  • Use additional codes to specify the type of stroke when applicable

Exclusion Criteria

Do NOT use R29.704 When
No specific exclusions found.

Related CPT Codes

99285CPT Code

Emergency department visit, high severity

Clinical Scenario

Used when a patient with an NIHSS score of 4 presents to the emergency department.

Documentation Requirements

Document the patient's NIHSS score and clinical findings.

Specialty Considerations

Emergency medicine providers should ensure timely documentation of neurological assessments.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of stroke severity, improving the accuracy of clinical data and treatment planning. R29.704 provides a clear indication of mild to moderate stroke severity, facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of stroke severity, improving the accuracy of clinical data and treatment planning. R29.704 provides a clear indication of mild to moderate stroke severity, facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of stroke severity, improving the accuracy of clinical data and treatment planning. R29.704 provides a clear indication of mild to moderate stroke severity, facilitating better patient management.

Resources

Clinical References

  • •
    NIH Stroke Scale Training

Coding & Billing References

  • •
    NIH Stroke Scale Training

Frequently Asked Questions

What does an NIHSS score of 4 indicate?

An NIHSS score of 4 indicates mild to moderate neurological impairment, suggesting that the patient has some functional deficits but is not severely disabled.