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  3. A00–B99
  4. Bacterial and viral infectious agents (B95-B97)

Bacterial and viral infectious agents (B95-B97)

ICD-10 codes B95-B97 identify specific bacterial and viral infectious agents responsible for diseases classified elsewhere in the medical records. These codes are used to specify the exact microorganism, such as Streptococcus, Staphylococcus, Escherichia coli, adenovirus, coronavirus, and others, when they cause infection-related conditions documented under different primary diagnoses.

This code range covers bacterial species including B95 codes like Streptococcus group A (B95.0), associated with illnesses such as cellulitis and invasive streptococcal disease, Staphylococcus aureus (B95.6) distinguishing methicillin-susceptible (B95.61) from resistant strains (B95.62), and other bacteria like Mycoplasma pneumoniae (B96.0), Escherichia coli (B96.2), or Helicobacter pylori (B96.81) linked to gastric ulcers. The B97 codes focus on viral agents causing infections elsewhere, for example, Adenovirus (B97.0), Coronavirus including SARS-associated virus (B97.2), and retroviruses like HIV-2 (B97.35). Using synonyms such as "Streptococcus pyogenes infection" for B95.0 or "Human papillomavirus infection" for B97.7 aids coders in accurately linking clinical documentation to these infectious agent codes, ensuring precise infectious agent identification in patient records.

  • Certain infectious and parasitic diseases (A00–B99)

    • Bacterial and viral infectious agents (B95-B97)

        • Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere (B95)

        • B95 Streptococcus, Staphylococcus, and Enterococcus as the cause of diseases classified elsewhere
        • B95.0 Streptococcus, group A, as the cause of diseases classified elsewhere
        • B95.1 Streptococcus, group B, as the cause of diseases classified elsewhere
        • B95.2 Enterococcus as the cause of diseases classified elsewhere
        • B95.3 Streptococcus pneumoniae as the cause of diseases classified elsewhere
        • B95.4 Other streptococcus as the cause of diseases classified elsewhere
        • B95.5 Unspecified streptococcus as the cause of diseases classified elsewhere
        • B95.6 Staphylococcus aureus as the cause of diseases classified elsewhere
        • B95.61 Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere
        • B95.62 Methicillin resistant Staphylococcus aureus infection as the cause of diseases classified elsewhere
        • B95.7 Other staphylococcus as the cause of diseases classified elsewhere
        • B95.8 Unspecified staphylococcus as the cause of diseases classified elsewhere

        • Other bacterial agents as the cause of diseases classified elsewhere (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
        • B96.4 Proteus (mirabilis) (morganii) 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

        • Viral agents as the cause of diseases classified elsewhere (B97)

        • B97 Viral agents as the cause of diseases classified elsewhere
        • 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

Instructional Notations

  • These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.