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ICD-10 Guide
ICD-10 CodesR84.0

R84.0

Abnormal level of enzymes in specimens from respiratory organs and thorax

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

Code Description

ICD-10 R84.0 is a billable code used to indicate a diagnosis of abnormal level of enzymes in specimens from respiratory organs and thorax.

Key Diagnostic Point:

R84.0 refers to abnormal enzyme levels detected in specimens obtained from the respiratory organs and thorax, which may indicate underlying pathological processes. Enzymes such as lactate dehydrogenase (LDH), alkaline phosphatase (ALP), and others can be elevated due to various conditions affecting the lungs and thoracic cavity. Common causes include infections (e.g., pneumonia, tuberculosis), malignancies (e.g., lung cancer), and inflammatory diseases (e.g., sarcoidosis). The presence of abnormal enzyme levels can signal tissue damage or dysfunction, necessitating further diagnostic evaluation. Clinicians often correlate these findings with clinical symptoms such as cough, dyspnea, chest pain, or systemic signs of infection. Accurate interpretation of enzyme levels requires a comprehensive understanding of the patient's clinical context, including history, physical examination, and additional laboratory tests.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying conditions
  • Need for correlation with clinical symptoms
  • Interpretation of laboratory results may vary
  • Documentation of clinical context is crucial

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to link enzyme levels to specific diagnoses
  • Misinterpretation of laboratory results
  • Inconsistent coding practices across providers

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, physical examination findings, and correlation of enzyme levels with clinical symptoms.

Common Clinical Scenarios

Patients presenting with respiratory symptoms and abnormal lab results indicating possible lung pathology.

Billing Considerations

Ensure that all relevant clinical findings are documented to support the diagnosis and coding.

Emergency Medicine

Documentation Requirements

Acute care documentation including vital signs, immediate lab results, and any interventions performed.

Common Clinical Scenarios

Patients with acute respiratory distress or chest pain requiring rapid assessment and lab evaluation.

Billing Considerations

Timely documentation is critical; ensure that abnormal enzyme levels are linked to acute presentations.

Coding Guidelines

Inclusion Criteria

Use R84.0 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when enzyme levels are specifically abnormal and linked to respiratory or thoracic conditions

Exclusion Criteria

Do NOT use R84.0 When
No specific exclusions found.

Related CPT Codes

80050CPT Code

General health panel

Clinical Scenario

Used when a comprehensive metabolic panel is ordered alongside respiratory enzyme tests.

Documentation Requirements

Document all tests performed and their clinical indications.

Specialty Considerations

Ensure that all relevant tests are linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of abnormal enzyme levels, improving the granularity of data for epidemiological studies and clinical research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of abnormal enzyme levels, improving the granularity of data for epidemiological studies and clinical research.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of abnormal enzyme levels, improving the granularity of data for epidemiological studies and clinical research.

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 should be documented to support the use of R84.0?

Documentation should include the specific enzyme levels that are abnormal, the clinical context, any symptoms present, and the rationale for testing.