B96.4 Proteus (mirabilis) (morganii) as the cause of diseases classified elsewhere

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Proteus (mirabilis) (morganii) as the cause of diseases classified elsewhere is B96.4 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
B95-B97: Bacterial and viral infectious agents (B95-B97)
Category B96
19 codes (16 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to B96.4:

  • Proteus (mirabilis) (morganii), as cause of disease classified elsewhere
  • Infection, infected, infective (opportunistic) › Proteus (mirabilis) (morganii) (vulgaris) NEC › as cause of disease classified elsewhere
  • Infection, infected, infective (opportunistic) › bacterial NOS › as cause of disease classified elsewhere › Proteus (mirabilis) (morganii)

U.S. Hospital Utilization

  • An estimated 119,840 U.S. inpatient stays in 2023 included B96.4 among the documented diagnoses.

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

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.a
Infectious agents causing diseases in other chapters (TOC)

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

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

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

References

Related Codes

Parent Code

B96 Other bacterial agents as the cause of diseases classified elsewhere

Related Codes in B96

B96 Other bacterial agents as the cause of diseases classified elsewhere B96.0 Mycoplasma pneumoniae [M. pneumoniae] as the cause of diseases classified elsewhere B96.1 Klebsiella pneumoniae [K. pneumoniae] as the cause of diseases classified elsewhere B96.2 Escherichia coli [E. coli ] as the cause of diseases classified elsewhere B96.20 Unspecified Escherichia coli [E. coli] as the cause of diseases classified elsewhere B96.21 Shiga toxin-producing Escherichia coli [E. coli] [STEC] O157 as the cause of diseases classified elsewhere B96.22 Other specified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere B96.23 Unspecified Shiga toxin-producing Escherichia coli [E. coli] [STEC] as the cause of diseases classified elsewhere B96.29 Other Escherichia coli [E. coli] as the cause of diseases classified elsewhere B96.3 Hemophilus influenzae [H. influenzae] as the cause of diseases classified elsewhere B96.5 Pseudomonas (aeruginosa) (mallei) (pseudomallei) as the cause of diseases classified elsewhere B96.6 Bacteroides fragilis [B. fragilis] as the cause of diseases classified elsewhere B96.7 Clostridium perfringens [C. perfringens] as the cause of diseases classified elsewhere B96.8 Other specified bacterial agents as the cause of diseases classified elsewhere B96.81 Helicobacter pylori [H. pylori] as the cause of diseases classified elsewhere B96.82 Vibrio vulnificus as the cause of diseases classified elsewhere B96.83 Acinetobacter baumannii as the cause of diseases classified elsewhere B96.89 Other specified bacterial agents 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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