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v1.0.0
ICD-10 Guide
ICD-10 CodesR35.89

R35.89

Other polyuria

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

Code Description

ICD-10 R35.89 is a billable code used to indicate a diagnosis of other polyuria.

Key Diagnostic Point:

Polyuria is defined as the production of abnormally large volumes of urine, typically exceeding 3 liters per day in adults. The condition can arise from various underlying causes, including diabetes mellitus, diabetes insipidus, and certain medications. However, 'Other polyuria' encompasses cases that do not fit neatly into these categories, such as those resulting from renal concentrating defects, excessive fluid intake, or specific endocrine disorders. Symptoms may include frequent urination, nocturia, and increased thirst (polydipsia). Laboratory findings may reveal dilute urine with low specific gravity, and blood tests may show normal glucose levels, ruling out diabetes mellitus. Accurate diagnosis often requires a thorough patient history, physical examination, and targeted laboratory tests to identify the underlying cause of the polyuria. Understanding the clinical context is crucial for appropriate coding and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes
  • Overlap with other ICD-10 codes related to polyuria
  • Need for comprehensive documentation to support diagnosis
  • Potential for misclassification if not properly evaluated

Audit Risk Factors

  • Inadequate documentation of the underlying cause
  • Misuse of the code for conditions that are better classified elsewhere
  • Failure to document associated symptoms or conditions
  • Inconsistent coding practices among providers

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Detailed patient history, including fluid intake, medications, and associated symptoms.

Common Clinical Scenarios

Patients presenting with excessive thirst and urination, requiring differential diagnosis.

Billing Considerations

Consideration of renal function tests and endocrine evaluations to rule out diabetes mellitus and other conditions.

Emergency Medicine

Documentation Requirements

Acute care documentation must include vital signs, urine output measurements, and initial lab results.

Common Clinical Scenarios

Patients presenting with dehydration or electrolyte imbalances due to acute polyuria.

Billing Considerations

Rapid assessment of potential causes, including acute kidney injury or medication effects.

Coding Guidelines

Inclusion Criteria

Use R35.89 When
  • Follow official ICD
  • CM guidelines for coding symptoms and signs
  • Ensure that the underlying cause of polyuria is documented when applicable, and use R35
  • 89 only when no other specific code applies

Exclusion Criteria

Do NOT use R35.89 When
No specific exclusions found.

Related CPT Codes

81000CPT Code

Urinalysis, by dipstick or tablet reagent

Clinical Scenario

Used to evaluate urine composition in patients presenting with polyuria.

Documentation Requirements

Document the reason for urinalysis and any relevant findings.

Specialty Considerations

Consider additional tests based on urinalysis results.

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 polyuria, improving the ability to track and manage patient care effectively.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of symptoms like polyuria, improving the ability to track and manage patient care effectively.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of symptoms like polyuria, improving the ability to track and manage patient care effectively.

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 I document to support the use of R35.89?

Document the patient's symptoms, fluid intake history, relevant lab findings, and any associated conditions to support the diagnosis of other polyuria.