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v1.0.0
ICD-10 Guide
ICD-10 CodesR45.0

R45.0

Nervousness

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

Code Description

ICD-10 R45.0 is a billable code used to indicate a diagnosis of nervousness.

Key Diagnostic Point:

Nervousness is characterized by feelings of unease, apprehension, or anxiety that can manifest physically and psychologically. Patients may report symptoms such as restlessness, increased heart rate, sweating, trembling, and difficulty concentrating. This condition can arise from various sources, including stress, anxiety disorders, or situational factors such as public speaking or exams. It is important to differentiate nervousness from more severe anxiety disorders, as the latter may require different treatment approaches. Clinical evaluation often includes a thorough history and physical examination, focusing on the duration and context of symptoms. Laboratory tests may be warranted to rule out underlying medical conditions that could contribute to anxiety-like symptoms, such as thyroid dysfunction or electrolyte imbalances. Understanding the context of nervousness is crucial for appropriate management and coding, as it can significantly impact patient care and treatment outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in patient presentation and symptom severity
  • Overlap with other anxiety disorders and conditions
  • Need for comprehensive documentation to support diagnosis
  • Potential for misdiagnosis if not thoroughly evaluated

Audit Risk Factors

  • Inadequate documentation of symptom severity and duration
  • Failure to differentiate from anxiety disorders
  • Misuse of the code in the absence of a clear clinical context
  • Lack of supporting clinical findings or laboratory results

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, including psychosocial factors and any relevant medical history.

Common Clinical Scenarios

Patients presenting with nervousness due to chronic illness, stress from work or family issues.

Billing Considerations

Consideration of comorbid conditions such as depression or chronic pain that may exacerbate symptoms.

Emergency Medicine

Documentation Requirements

Acute assessment of symptoms, including vital signs and any immediate interventions.

Common Clinical Scenarios

Patients presenting with acute nervousness during a panic attack or following a traumatic event.

Billing Considerations

Rapid assessment is crucial; documentation should reflect the acute nature of symptoms and any immediate treatment provided.

Coding Guidelines

Inclusion Criteria

Use R45.0 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that R45
  • 0 is used only when nervousness is the primary symptom and not as a secondary diagnosis
  • Document the context and duration of symptoms to support the use of this code

Exclusion Criteria

Do NOT use R45.0 When
No specific exclusions found.

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used when a patient presents with nervousness and requires evaluation and management.

Documentation Requirements

Document the patient's history, examination findings, and any treatment provided.

Specialty Considerations

Internal medicine may require more detailed psychosocial history.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of symptoms like nervousness, improving the ability to capture the nuances of patient presentations and facilitating better treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of symptoms like nervousness, improving the ability to capture the nuances of patient presentations and facilitating better treatment planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of symptoms like nervousness, improving the ability to capture the nuances of patient presentations and facilitating better treatment planning.

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

When should I use R45.0 instead of a more specific anxiety disorder code?

Use R45.0 when nervousness is the primary symptom and not part of a diagnosed anxiety disorder. Ensure that documentation supports the use of this code.