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v1.0.0
ICD-10 Guide
DiagnosesProteus Mirabilis

Proteus Mirabilis

ICD-10 Coding for Proteus mirabilis Infection(B96.4, N39.0, A41.89)

PRIMARY SPECIALTYUrology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Proteus Mirabilis?
Essential facts and insights about Proteus mirabilis Infection

Key Clinical Considerations:

  • Urinary tract infection symptoms such as dysuria, frequency, urgency, and flank pain
  • Urine culture showing growth of Proteus mirabilis
  • Costovertebral angle tenderness on physical examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including previous UTIs and antibiotic use
  • Urinalysis results and culture sensitivity
  • Physical exam findings related to urinary symptoms

Coding Guidelines

Usage Guidelines & Examples

  • Follow usage guidelines for coding urinary infections caused by Proteus mirabilis.
  • Common errors include misclassifying the site of infection or not documenting antibiotic resistance.

Code Exclusions

Important Exclusions

  • Other bacterial infections not caused by Proteus mirabilis
  • Alternative codes for non-infectious urinary conditions

Related ICD-10 Codes

Primary Codes
N39.0
Urinary tract infection, site not specified
N12
Acute pyelonephritis
Ancillary Codes
N39.0
Differential Codes
B96.5
N10
A41.5

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Urology

Specialty Applications

  • Patients with recurrent urinary tract infections
  • Urology clinics and hospital settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document patient symptoms, lab results, and treatment plans.

What are the billing considerations?

Ensure accurate coding based on culture results and associated symptoms.