ICD-10 Guide

A02.25

Salmonella pyelonephritis

BILLABLE STATUSYes

IMPLEMENTATION DATEOctober 1, 2015

LAST UPDATED09/17/2025

Code Description

ICD-10 A02.25 is a billable code used to indicate a diagnosis of salmonella pyelonephritis.

Key Diagnostic Point:

Salmonella pyelonephritis

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

Analysis of ICD-10 Code A02
25 - Salmonella Pyelonephritis Complexity Rating: Medium Factors Contributing to Complexity 1
Underlying Conditions: - Patients with Salmonella infections may have underlying conditions (e
Laboratory Testing: - Confirmation of Salmonella infection typically requires specific laboratory tests (e

Audit Risk Factors

Documentation completeness
Coding accuracy verification
Clinical correlation review

Specialty Focus

Medical Specialties

General

Documentation Requirements

ICD-10 code A02.25 refers to Salmonella pyelonephritis, which is a kidney infection caused by Salmonella bacteria. The following are the medical specialties most commonly associated with this conditio...

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines and documentation requirements

Coding Guidelines

Inclusion Criteria

Use A02.25 When

Comprehensive Coding Guidelines for ICD
10 Code A02
Salmonella Pyelonephritis
Overview of A02
10 code A02
25 is used to specify an infection caused by Salmonella species affecting the kidney, resulting in pyelonephritis
It is important to differentiate this condition from other types of renal infections caused by different pathogens
When to Use A02

Exclusion Criteria

Do NOT use A02.25 When

Inclusion and Exclusion Criteria
Exclusion:

Related CPT Codes

No CPT Codes Available

Related CPT codes for this diagnosis will be displayed here when available.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Changes from ICD-9 to ICD-10

- In ICD-9, Salmonella infections were categorized broadly under a single code (001.0 to 001.9), which did not allow for the granularity needed for specific conditions like pyelonephritis caused by Salmonella.

ICD-9 vs ICD-10

The implementation of ICD-10 brought significant changes to the coding landscape, including for specific codes like A02.25, which designates Salmonella pyelonephritis. Here’s an overview of the impact of ICD-10 on this particular code: Changes from ICD-9 to ICD-10 1. Code Structure: - In ICD-9, Salmonella infections were categorized broadly under a single code (001.0 to 001.9), which did not allow for the granularity needed for specific conditions like pyelonephritis caused by Salmonella. - In ICD-10, the codes were expanded to allow for more specific conditions. A02.25 specifically identifies Salmonella pyelonephritis, providing a clear distinction from other types of Salmonella infections. 2. Increased Codes: - ICD-10 contains a much larger set of codes (over 68,000) compared to ICD-9 (approximately 14,000), which allows for more precise coding of diagnoses, including the specific causative organism for infections. Specificity Improvements - Granular Diagnosis: - The shift to ICD-10 allows for greater specificity in diagnosing...

Reimbursement & Billing Impact

Reimbursement Implications - Value-Based Care: - As healthcare transitions to value-based care models, precise coding like A02.25 can impact reimbursement rates. Correct and specific coding can ensure that providers receive appropriate compensation for the complexity of care provided. - Claims Denials: - Accurate use of codes in ICD-10 helps to reduce claims denials related to insufficient documentation. Specific codes can justify the medical necessity of treatments and can aid in appealing denied claims.

A02.25

Code Description

Key Diagnostic Point:

Code Complexity Analysis

Complexity Rating: Medium

Complexity Factors

Audit Risk Factors

Specialty Focus

Medical Specialties

General

Documentation Requirements

Common Clinical Scenarios

Billing Considerations

Coding Guidelines

Inclusion Criteria

Exclusion Criteria

Related CPT Codes

No CPT Codes Available

ICD-10 Impact

Diagnostic & Documentation Impact

ICD-10 Improvements

ICD-9 vs ICD-10

Reimbursement & Billing Impact

Resources

Clinical References

Coding & Billing References

Frequently Asked Questions

A02.25

Code Description

Key Diagnostic Point:

Code Complexity Analysis

Complexity Rating: Medium

Complexity Factors

Audit Risk Factors

Specialty Focus

Medical Specialties

General

Documentation Requirements

Common Clinical Scenarios

Billing Considerations

Coding Guidelines

Inclusion Criteria

Exclusion Criteria

Related CPT Codes

No CPT Codes Available

ICD-10 Impact

Diagnostic & Documentation Impact

ICD-10 Improvements

ICD-9 vs ICD-10

Reimbursement & Billing Impact

Resources

Clinical References

Coding & Billing References

Frequently Asked Questions