2026 ICD-10-CM Diagnosis Code B97Viral agents as the cause of diseases classified elsewhere

ICD-10-CM Codes›A00–B99›B95-B97›B97

ICD-10-CM B97
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B97 is a non-billable ICD-10-CM category code for viral agents as the cause of diseases classified elsewhere, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B97.0, B97.10, B97.11, and B97.12.

Code Identity

ICD-10-CM Code
B97
Billable Status
No — Non-Billable Category
Code Describes
Viral agents as the cause of diseases classified elsewhere
Chapter
B95-B97
Bacterial and viral infectious agents

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB95-B97Bacterial and viral infectious agents
CategoryB97Viral agents as the cause of diseases classified elsewhere
This CodeB97Viral agents as the cause of diseases classified elsewhere

Specific Coding for Viral agents as the cause of diseases classified elsewhereOverview

Non-specific codes like B97 require more characters. Use one of these billable codes instead:

  • Use B97.0 for Adenovirus as the cause of diseases classified elsewhere

  • B97.1 for Enterovirus as the cause of diseases classified elsewhere

  • Use B97.10 for Unspecified enterovirus as the cause of diseases classified elsewhere

  • Use B97.11 for Coxsackievirus as the cause of diseases classified elsewhere

  • Use B97.12 for Echovirus as the cause of diseases classified elsewhere

  • Use B97.19 for Other enterovirus as the cause of diseases classified elsewhere

  • B97.2 for Coronavirus as the cause of diseases classified elsewhere

  • Use B97.21 for SARS-associated coronavirus as the cause of diseases classified elsewhere

  • Use B97.29 for Other coronavirus as the cause of diseases classified elsewhere

  • B97.3 for Retrovirus as the cause of diseases classified elsewhere

  • Use B97.30 for Unspecified retrovirus as the cause of diseases classified elsewhere

  • Use B97.31 for Lentivirus as the cause of diseases classified elsewhere

  • Use B97.32 for Oncovirus as the cause of diseases classified elsewhere

  • Use B97.33 for Human T-cell lymphotrophic virus, type I [HTLV-I] as the cause of diseases classified elsewhere

  • Use B97.34 for Human T-cell lymphotrophic virus, type II [HTLV-II] as the cause of diseases classified elsewhere

  • Use B97.35 for Human immunodeficiency virus, type 2 [HIV 2] as the cause of diseases classified elsewhere

  • Use B97.39 for Other retrovirus as the cause of diseases classified elsewhere

  • Use B97.4 for Respiratory syncytial virus as the cause of diseases classified elsewhere

  • Use B97.5 for Reovirus as the cause of diseases classified elsewhere

  • Use B97.6 for Parvovirus as the cause of diseases classified elsewhere

  • Use B97.7 for Papillomavirus as the cause of diseases classified elsewhere

  • B97.8 for Other viral agents as the cause of diseases classified elsewhere

  • Use B97.81 for Human metapneumovirus as the cause of diseases classified elsewhere

  • Use B97.89 for Other viral agents as the cause of diseases classified elsewhere

Patient EducationClinical

Viral Infections

Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease.

The full article covers:

  • What are viruses?
  • How are viruses spread?
  • How do viruses cause disease?
  • What are the treatments for viral infections?
  • Can viral infections be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B97Overview

Is B97 (Viral agents as the cause of diseases classified elsewhere) a billable code?

No. This is a category header that groups the codes for viral agents as the cause of diseases classified elsewhere, and headers cannot be submitted on claims. Claims for viral agents as the cause of diseases classified elsewhere need a more specific code from this category, such as B97.0, B97.10, and B97.11.