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v1.0.0
ICD-10 Guide
DiagnosesGram Negative Bacteremia

Gram Negative Bacteremia

ICD-10 Coding for Gram-negative Bacteremia(A41.50, B96.4)

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

Diagnosis Overview

What is Gram Negative Bacteremia?
Essential facts and insights about Gram-negative Bacteremia

Key Clinical Considerations:

  • Fever, chills, tachycardia, hypotension
  • Blood cultures positive for Gram-negative organisms
  • Signs of sepsis on physical examination, such as altered mental status or respiratory distress

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including risk factors for infection
  • Results of blood cultures and sensitivity testing
  • Clinical assessment of sepsis severity

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for sepsis coding, including the use of additional codes for organ dysfunction.
  • Common errors include misclassifying the type of bacteremia or failing to document the source of infection.

Code Exclusions

Important Exclusions

  • Bacteremia due to Gram-positive organisms
  • Sepsis due to other specified organisms

Related ICD-10 Codes

Primary Codes
A41.50
Sepsis due to unspecified Gram-negative bacteria
A41.9
Sepsis, unspecified organism
Ancillary Codes
R78.81
Differential Codes
A41.9
A41.9
when the organism causing sepsis is not identified as Gram-negative.
A41.51
A41.51
when Proteus is the identified organism causing sepsis.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

  • Patients with compromised immune systems, elderly patients, and those with chronic illnesses.
  • Emergency departments, urgent care centers, and inpatient 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 the clinical presentation, lab results, and treatment plan.

What are the billing considerations?

Ensure accurate coding to reflect the severity of the condition and associated treatments.