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ICD-10 Guide
ICD-10 CodesR94

R94

Abnormal results of function studies

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 R94 is a used to indicate a diagnosis of abnormal results of function studies.

Key Diagnostic Point:

The ICD-10 Level 1 Category code R94 encompasses abnormal results from various function studies that assess physiological functions of the body. This category includes abnormal findings from tests such as pulmonary function tests, cardiac function studies, and other specialized diagnostic procedures. These results may indicate underlying health issues that require further investigation or management, making it crucial for healthcare providers to accurately document and code these findings. The clinical significance of R94 lies in its ability to highlight potential dysfunctions that could lead to more severe health complications if left unaddressed.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of tests included
  • Interpretation of abnormal results
  • Need for further diagnostic procedures

Audit Risk Factors

  • Inconsistent documentation of test results
  • Failure to follow up on abnormal findings
  • Misinterpretation of test results leading to incorrect coding

Specialty Focus

Medical Specialties

Pulmonology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Cardiology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related Codes

Child Codes

29 codes
R94.0
Abnormal results of function studies of central nervous system
R94.01
Abnormal electroencephalogram [EEG]
R94.02
Abnormal brain scan
R94.09
Abnormal results of other function studies of central nervous system
R94.1
Abnormal results of function studies of peripheral nervous system and special senses
R94.11
Abnormal results of function studies of eye
R94.110
Abnormal electro-oculogram [EOG]
R94.111
Abnormal electroretinogram [ERG]
R94.112
Abnormal visually evoked potential [VEP]
R94.113
Abnormal oculomotor study
R94.118
Abnormal results of other function studies of eye
R94.12
Abnormal results of function studies of ear and other special senses
R94.120
Abnormal auditory function study
R94.121
Abnormal vestibular function study
R94.128
Abnormal results of other function studies of ear and other special senses
R94.13
Abnormal results of function studies of peripheral nervous system
R94.130
Abnormal response to nerve stimulation, unspecified
R94.131
Abnormal electromyogram [EMG]
R94.138
Abnormal results of other function studies of peripheral nervous system
R94.2
Abnormal results of pulmonary function studies
R94.3
Abnormal results of cardiovascular function studies
R94.30
Abnormal result of cardiovascular function study, unspecified
R94.31
Abnormal electrocardiogram [ECG] [EKG]
R94.39
Abnormal result of other cardiovascular function study
R94.4
Abnormal results of kidney function studies
R94.5
Abnormal results of liver function studies
R94.6
Abnormal results of thyroid function studies
R94.7
Abnormal results of other endocrine function studies
R94.8
Abnormal results of function studies of other organs and systems

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical impact of R94 is significant, as it helps identify patients who may be at risk for serious health conditions based on abnormal function study results. This can lead to timely interventions that improve patient outcomes and reduce the burden of disease. Administratively, accurate coding in this category supports population health initiatives by providing data that can be used to monitor trends in health outcomes and resource utilization, ultimately guiding healthcare policy and practice.

ICD-9 vs ICD-10

The clinical impact of R94 is significant, as it helps identify patients who may be at risk for serious health conditions based on abnormal function study results. This can lead to timely interventions that improve patient outcomes and reduce the burden of disease. Administratively, accurate coding in this category supports population health initiatives by providing data that can be used to monitor trends in health outcomes and resource utilization, ultimately guiding healthcare policy and practice.

Reimbursement & Billing Impact

reimbursement rates, so it is essential to follow payer-specific guidelines and ensure that all claims are submitted with accurate and complete information.

Resources

Clinical References

  • •
    Official ICD-10 Guidelines for R94

Coding & Billing References

  • •
    Official ICD-10 Guidelines for R94

Frequently Asked Questions

What conditions are included in R94?

R94 includes abnormal results from function studies such as pulmonary function tests, cardiac function tests, and other physiological assessments that indicate potential health issues.

When should I use R94 codes?

R94 codes should be used when a patient has undergone function studies that yield abnormal results, necessitating further evaluation or management of the underlying condition.

What documentation is required for R94?

Documentation should include the specific tests performed, the results of those tests, any clinical findings related to the abnormal results, and the plan for further evaluation or treatment.