2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Viral agents as the cause of diseases classified elsewhere
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B97: its own notes plus those printed at block B95-B97 and Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Notes

General instructions on how these codes are used.

From Block B95-B97 Bacterial and viral infectious agents applies to 46 codes
  • These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name B97, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming B97: they are not reported together with it, unless the two conditions are unrelated.

  • B34 Viral infection of unspecified site
    viral agents as the cause of diseases classified elsewhere (B97.-)

Use Additional Code 52

These codes say to use an additional code from the note, and B97 is one of the codes named.

  • J95.851 Ventilator associated pneumonia
    code to identify the organism, if known (B95.-, B96.-, B97.-)
  • P23.0 Congenital pneumonia due to viral agent
    code (B97) to identify organism
  • E06.0 Acute thyroiditis
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • G06 Intracranial and intraspinal abscess and granuloma
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • H65 Nonsuppurative otitis media
    infectious agent (B95-B97) names B95-B97, which includes this code
  • I30.1 Infective pericarditis
    code (B95-B97) to identify infectious agent names B95-B97, which includes this code
  • I33.0 Acute and subacute infective endocarditis
    code (B95-B97) to identify infectious agent names B95-B97, which includes this code
  • I40.0 Infective myocarditis
    code (B95-B97) to identify infectious agent names B95-B97, which includes this code
  • J01 Acute sinusitis
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • J02.8 Acute pharyngitis due to other specified organisms
    code (B95-B97) to identify infectious agent names B95-B97, which includes this code
  • J03.8 Acute tonsillitis due to other specified organisms
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • J04 Acute laryngitis and tracheitis
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • J05 Acute obstructive laryngitis [croup] and epiglottitis
    code (B95-B97) to identify infectious agent. names B95-B97, which includes this code
  • J06.9 Acute upper respiratory infection, unspecified
    code (B95-B97) to identify infectious agent, if known, such as: names B95-B97, which includes this code
  • J32 Chronic sinusitis
    infectious agent (B95-B97) names B95-B97, which includes this code

37 more Use Additional Code notes name this code. Browse all Use Additional Code notes.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B97Overview

What is the ICD-10 code for viral agents as the cause of diseases classified elsewhere?

B97 is the ICD-10-CM category for viral agents as the cause of diseases classified elsewhere, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.