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

The ICD-10-CM code for Respiratory syncytial virus as the cause of diseases classified elsewhere is B97.4 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

1: Certain infectious and parasitic diseases (A00-B99)

Section

B95-B97: Bacterial and viral infectious agents (B95-B97)

Category B97

25 codes (20 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to B97.4:

• Respiratory › syncytial virus, as cause of disease classified elsewhere
• Virus, viral › respiratory syncytial (RSV) › as cause of disease classified elsewhere
• Infection, infected, infective (opportunistic) › virus, viral NOS › respiratory syncytial (RSV) › as cause of disease classified elsewhere

Inclusion Terms

• RSV as the cause of diseases classified elsewhere

U.S. Hospital Utilization

• An estimated 41,110 U.S. inpatient stays in 2023 included B97.4 among the documented diagnoses.
• 100 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

HIV Infections (TOC entry)

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

Infectious agents causing diseases in other chapters (TOC)

b. Infectious agents as the cause of diseases classified to other chapters ................................. 22

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

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)