B25-B34
Medium Complexity
Other viral diseases
Primary Specialty: Infectious Disease
Last Updated: 2025-09-09
ICD-10 Codes (61)
61 billable0 category headers
B26Billable
B26.0Billable
B26.1Billable
B26.2Billable
B26.3Billable
B26.8Billable
B26.81Billable
B26.82Billable
B26.83Billable
B26.84Billable
B26.85Billable
B26.89Billable
B26.9Billable
B27Billable
B27.0Billable
B27.00Billable
B27.01Billable
B27.02Billable
B27.09Billable
B27.1Billable
B27.10Billable
B27.11Billable
B27.12Billable
B27.19Billable
B27.8Billable
B27.80Billable
B27.81Billable
B27.82Billable
B27.89Billable
B27.9Billable
B27.90Billable
B27.91Billable
B27.92Billable
B27.99Billable
B30Billable
B30.0Billable
B30.1Billable
B30.2Billable
B30.3Billable
B30.8Billable
B30.9Billable
B33Billable
B33.0Billable
B33.1Billable
B33.2Billable
B33.20Billable
B33.21Billable
B33.22Billable
B33.23Billable
B33.24Billable
B33.3Billable
B33.4Billable
B33.8Billable
B34Billable
B34.0Billable
B34.1Billable
B34.2Billable
B34.3Billable
B34.4Billable
B34.8Billable
B34.9Billable
Updates & Changes
FY 2026 Updates
Current Year
New Codes (1)
B08.62
Orf virus disease with complications
Revised Codes (2)
B00.9
Herpesviral infection, unspecified - updated to include HSV type specification when known
B08.5
Enteroviral vesicular pharyngitis - enhanced diagnostic specificity
Deleted Codes
No codes deleted in this range for FY 2026
Historical Changes
- •FY 2025: Routine maintenance updates with minor terminology clarifications
- •FY 2024: Enhanced specificity requirements for certain code ranges
- •FY 2023: Updated documentation guidelines for improved clarity
Upcoming Changes
- •Proposed updates pending review by Coordination and Maintenance Committee
- •Under consideration: Enhanced digital health integration codes
Implementation Guidance
- •Review all FY 2026 updates for B25-B34 codes before implementation
- •Always verify the most current codes in the ICD-10-CM manual
- •Ensure clinical documentation supports the selected diagnosis codes
- +3 more guidance items...
Range Overview
high priority
The ICD-10 category B25-B34, 'Other viral diseases,' covers a broad range of viral infections not classified elsewhere. This includes diseases caused by cytomegaloviral, slow virus, and other viral infections. The codes in this range are used to document conditions such as cytomegaloviral disease, slow virus infections, and other viral diseases. These codes are often used in conjunction with other codes to provide a comprehensive diagnosis.
Key Usage Points:
- •These codes are used when a patient has a viral disease not classified elsewhere.
- •Codes in this range can be used in conjunction with other codes to provide a comprehensive diagnosis.
- •B25-B34 codes are often used in infectious disease, primary care, and hospital settings.
- •These codes are not used for diseases caused by HIV or hepatitis viruses.
- •Documentation should specify the type of viral disease and any associated conditions.
Coding Guidelines
When to Use:
- ✓When a patient has a viral disease not classified elsewhere.
- ✓When a patient has a cytomegaloviral disease.
- ✓When a patient has a slow virus infection.
- ✓When a patient has a viral disease and other associated conditions.
When NOT to Use:
- ✗When a patient has a disease caused by HIV or hepatitis viruses.
- ✗When a patient has a bacterial, fungal, or parasitic infection.
- ✗When a patient has a condition that is classified elsewhere.
- ✗When a patient has a viral disease that is specified in another code range.
Code Exclusions
Always verify exclusions in the ICD-10 manual to ensure accurate coding.
Documentation Requirements
Documentation for B25-B34 codes should specify the type of viral disease and any associated conditions. It should also include information about the patient's symptoms, treatment, and response to treatment.
Clinical Information:
- •Type of viral disease
- •Associated conditions
- •Patient's symptoms
- •Treatment and response to treatment
Supporting Evidence:
- •Lab results confirming viral infection
- •Imaging studies if applicable
- •Notes from treating physician
- •Patient's medical history
Good Documentation Example:
Patient diagnosed with cytomegaloviral disease. Symptoms include fever, fatigue, and swollen glands. Lab results confirm CMV infection. Patient is responding well to antiviral treatment.
Poor Documentation Example:
Patient has a viral infection.
Common Documentation Errors:
- âš Not specifying the type of viral disease
- âš Not including associated conditions
- âš Not providing supporting evidence such as lab results
- âš Not documenting the patient's response to treatment
Range Statistics
6
Total Codes
61
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:
Coding Complexity
Medium
Complexity Rating
The coding complexity for B25-B34 is rated as medium due to the need to accurately identify the specific type of viral disease and any associated conditions. Exclusions also need to be understood and applied correctly. Additionally, coders need to stay updated with any changes to the code range.
Key Factors:
- â–¸Determining the specific type of viral disease
- â–¸Identifying and coding associated conditions
- â–¸Understanding exclusions
- â–¸Keeping up with changes and updates to the code range
Specialty Focus
B25-B34 codes are often used in infectious disease, primary care, and hospital settings. They are also used by specialists treating conditions associated with viral diseases.
Primary Specialties:
Infectious Disease
40%
Primary Care
30%
Hospital Medicine
30%
Clinical Scenarios:
- • A patient with a cytomegaloviral disease presenting with fever and fatigue.
- • A patient with a slow virus infection presenting with neurological symptoms.
- • A patient with a viral disease and associated conditions such as pneumonia.
- • A patient with a viral disease not responding to treatment.
- • A patient with a viral disease requiring hospitalization.
Resources & References
There are numerous resources available for understanding and applying B25-B34 codes. These include the ICD-10 manual, official coding guidelines, and clinical reference sources.
Official Guidelines:
- ICD-10-CM Official Guidelines for Coding and Reporting
- American Health Information Management Association (AHIMA) guidelines
- Centers for Disease Control and Prevention (CDC) guidelines
Clinical References:
- UpToDate
- Medscape
Educational Materials:
- ICD-10 coding training courses
- Webinars on ICD-10 updates
Frequently Asked Questions
Can B25-B34 codes be used for diseases caused by HIV or hepatitis viruses?
No, diseases caused by HIV or hepatitis viruses have their own specific codes and should not be coded with B25-B34 codes.