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ICD-10 Guide
ICD-10 CodesR89.5

R89.5

Abnormal microbiological findings in specimens from other organs, systems and tissues

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

Code Description

ICD-10 R89.5 is a billable code used to indicate a diagnosis of abnormal microbiological findings in specimens from other organs, systems and tissues.

Key Diagnostic Point:

R89.5 is used to classify abnormal microbiological findings in specimens obtained from various organs, systems, and tissues that do not fall under more specific categories. This code encompasses a range of findings, including but not limited to abnormal cultures, atypical microbiological results, and unexpected pathogen identifications. Clinically, these findings may indicate infections, colonization by opportunistic pathogens, or contamination of specimens. The abnormal results can arise from various sources, including respiratory, urinary, gastrointestinal, and wound specimens. The interpretation of these findings requires careful clinical correlation, as they may not always indicate active disease. For instance, a positive culture for a non-pathogenic organism may be clinically insignificant in an asymptomatic patient. Therefore, the context of the patient's symptoms, history, and other diagnostic results is crucial for accurate diagnosis and treatment planning.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying conditions
  • Need for clinical correlation with symptoms
  • Differentiation between colonization and infection
  • Potential for contamination in specimen collection

Audit Risk Factors

  • Inadequate documentation of clinical correlation
  • Misinterpretation of abnormal findings as active disease
  • Failure to specify the source of the specimen
  • Inconsistent reporting of microbiological results

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed clinical history, laboratory results, and correlation with physical examination findings.

Common Clinical Scenarios

Patients presenting with unexplained symptoms where microbiological testing reveals abnormal results.

Billing Considerations

Ensure that the documentation clearly states the clinical significance of the findings and any follow-up actions taken.

Emergency Medicine

Documentation Requirements

Acute care documentation must include the reason for testing and any immediate interventions based on findings.

Common Clinical Scenarios

Patients with acute infections where rapid microbiological testing is performed.

Billing Considerations

Document the urgency of the findings and any immediate treatment decisions made based on the results.

Coding Guidelines

Inclusion Criteria

Use R89.5 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when the abnormal findings are not classified elsewhere
  • Document the clinical significance and context of the findings

Exclusion Criteria

Do NOT use R89.5 When
No specific exclusions found.

Related CPT Codes

87070CPT Code

Culture, bacterial, any source

Clinical Scenario

Used when obtaining cultures to identify abnormal microbiological findings.

Documentation Requirements

Document the source of the specimen and the reason for the culture.

Specialty Considerations

Ensure that the culture results are correlated with clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of abnormal findings, improving the granularity of data collection and analysis. R89.5 provides a mechanism to capture findings that do not fit neatly into other categories.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of abnormal findings, improving the granularity of data collection and analysis. R89.5 provides a mechanism to capture findings that do not fit neatly into other categories.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of abnormal findings, improving the granularity of data collection and analysis. R89.5 provides a mechanism to capture findings that do not fit neatly into other categories.

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 R89.5?

Use R89.5 when you have abnormal microbiological findings from specimens that do not fit into more specific categories and when there is adequate clinical documentation to support the findings.