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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 CodesR29.700

R29.700

NIHSS score 0

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

Code Description

ICD-10 R29.700 is a billable code used to indicate a diagnosis of nihss score 0.

Key Diagnostic Point:

The NIHSS (National Institutes of Health Stroke Scale) score of 0 indicates no neurological deficits and is often used to assess patients who have experienced a transient ischemic attack (TIA) or stroke. A score of 0 suggests that the patient is neurologically intact, with no observable signs of stroke-related impairment. This score is critical in the acute management of stroke patients, as it helps determine the need for further diagnostic imaging or intervention. In clinical practice, a NIHSS score of 0 may be documented in patients presenting with stroke-like symptoms that resolve quickly, indicating a transient event rather than a permanent neurological deficit. Accurate assessment and documentation of the NIHSS score are essential for appropriate coding and billing, as well as for tracking patient outcomes in stroke care.

Code Complexity Analysis

Complexity Rating: Low

Low Complexity

Complexity Factors

  • Clear definition of NIHSS score 0
  • Limited differential diagnoses
  • Standardized assessment tool
  • Minimal ambiguity in clinical documentation

Audit Risk Factors

  • Inadequate documentation of NIHSS assessment
  • Failure to specify the context of the score (e.g., TIA vs. stroke)
  • Misinterpretation of NIHSS score in clinical notes
  • Lack of follow-up documentation for transient symptoms

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Documentation should include the NIHSS score, the context of the assessment, and any relevant clinical history.

Common Clinical Scenarios

Patients presenting with transient neurological symptoms that resolve before evaluation.

Billing Considerations

Ensure that the NIHSS score is documented in the context of the patient's overall clinical picture.

Emergency Medicine

Documentation Requirements

Acute care documentation must include the NIHSS score, time of onset of symptoms, and any interventions performed.

Common Clinical Scenarios

Patients arriving in the emergency department with stroke-like symptoms that resolve quickly.

Billing Considerations

Rapid assessment and documentation are crucial in emergency settings to ensure accurate coding.

Coding Guidelines

Inclusion Criteria

Use R29.700 When
  • According to ICD
  • CM guidelines, R29
  • 700 should be used when a patient has a documented NIHSS score of 0, indicating no neurological deficits
  • It is important to ensure that the score is supported by clinical documentation

Exclusion Criteria

Do NOT use R29.700 When
No specific exclusions found.

Related CPT Codes

99285CPT Code

Emergency department visit, high severity

Clinical Scenario

Used when a patient presents with stroke-like symptoms but is found to have a NIHSS score of 0.

Documentation Requirements

Documentation must support the level of service provided, including the NIHSS assessment.

Specialty Considerations

Emergency medicine providers should ensure rapid and accurate documentation to support coding.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of neurological assessments, including the NIHSS. This specificity aids in better tracking of patient outcomes and resource allocation in stroke care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of neurological assessments, including the NIHSS. This specificity aids in better tracking of patient outcomes and resource allocation in stroke care.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of neurological assessments, including the NIHSS. This specificity aids in better tracking of patient outcomes and resource allocation in stroke care.

Resources

Clinical References

  • •
    NIH Stroke Scale Training

Coding & Billing References

  • •
    NIH Stroke Scale Training

Frequently Asked Questions

What does a NIHSS score of 0 indicate?

A NIHSS score of 0 indicates that the patient has no neurological deficits and is neurologically intact, which is crucial for assessing the severity of stroke or TIA.