B97 Viral agents as the cause of diseases classified elsewhere

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Viral agents as the cause of diseases classified elsewhere is B97 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
B95-B97: Bacterial and viral infectious agents (B95-B97)
Category B97
25 codes (20 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Use additional organism code (B95-B97) when not in infection code

b. Infectious agents as the cause of diseases classified to other chapters Certain infections are classified in chapters other than Chapter 1 and no organism is identified as part of the infection code. In these instances, it is necessary to use an additional code from Chapter 1 to identify the organism. A code from category B95, Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified to other chapters, B96, Other bacterial agents as the cause of diseases classified to other chapters, or B97, Viral agents as the cause of diseases classified to other chapters, is to be used as an additional code to identify the organism. An instructional note will be found at the infection code advising that an additional organism code is required.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.b
HIV Infections (TOC entry)

a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.a

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

B97.0 Adenovirus as the cause of diseases classified elsewhere B97.1 Enterovirus as the cause of diseases classified elsewhere B97.10 Unspecified enterovirus as the cause of diseases classified elsewhere B97.11 Coxsackievirus as the cause of diseases classified elsewhere B97.12 Echovirus as the cause of diseases classified elsewhere B97.19 Other enterovirus as the cause of diseases classified elsewhere B97.2 Coronavirus as the cause of diseases classified elsewhere B97.21 SARS-associated coronavirus as the cause of diseases classified elsewhere B97.29 Other coronavirus as the cause of diseases classified elsewhere B97.3 Retrovirus as the cause of diseases classified elsewhere B97.30 Unspecified retrovirus as the cause of diseases classified elsewhere B97.31 Lentivirus as the cause of diseases classified elsewhere B97.32 Oncovirus as the cause of diseases classified elsewhere B97.33 Human T-cell lymphotrophic virus, type I [HTLV-I] as the cause of diseases classified elsewhere B97.34 Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhere B97.35 Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere B97.39 Other retrovirus as the cause of diseases classified elsewhere B97.4 Respiratory syncytial virus as the cause of diseases classified elsewhere B97.5 Reovirus as the cause of diseases classified elsewhere B97.6 Parvovirus as the cause of diseases classified elsewhere B97.7 Papillomavirus as the cause of diseases classified elsewhere B97.8 Other viral agents as the cause of diseases classified elsewhere B97.81 Human metapneumovirus as the cause of diseases classified elsewhere B97.89 Other viral agents as the cause of diseases classified elsewhere

Related Codes in B97

B97.0 Adenovirus as the cause of diseases classified elsewhere B97.1 Enterovirus as the cause of diseases classified elsewhere B97.10 Unspecified enterovirus as the cause of diseases classified elsewhere B97.11 Coxsackievirus as the cause of diseases classified elsewhere B97.12 Echovirus as the cause of diseases classified elsewhere B97.19 Other enterovirus as the cause of diseases classified elsewhere B97.2 Coronavirus as the cause of diseases classified elsewhere B97.21 SARS-associated coronavirus as the cause of diseases classified elsewhere B97.29 Other coronavirus as the cause of diseases classified elsewhere B97.3 Retrovirus as the cause of diseases classified elsewhere B97.30 Unspecified retrovirus as the cause of diseases classified elsewhere B97.31 Lentivirus as the cause of diseases classified elsewhere B97.32 Oncovirus as the cause of diseases classified elsewhere B97.33 Human T-cell lymphotrophic virus, type I [HTLV-I] as the cause of diseases classified elsewhere B97.34 Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhere B97.35 Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere B97.39 Other retrovirus as the cause of diseases classified elsewhere B97.4 Respiratory syncytial virus as the cause of diseases classified elsewhere B97.5 Reovirus as the cause of diseases classified elsewhere B97.6 Parvovirus as the cause of diseases classified elsewhere
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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