2024 ICD-10-CM Diagnosis Code B00.9

Herpesviral infection, unspecified

ICD-10-CM Code:
ICD-10 Code for:
Herpesviral infection, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Certain infectious and parasitic diseases
    • Viral infections characterized by skin and mucous membrane lesions
      • Herpesviral [herpes simplex] infections

B00.9 is a billable diagnosis code used to specify a medical diagnosis of herpesviral infection, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like B00.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Cellular changes consistent with Herpes simplex
  • Chronic herpes simplex
  • Chronic herpes simplex
  • Chronic infection caused by herpes simplex virus co-occurrent with human immunodeficiency virus infection
  • Combined Herpes simplex 1 and Herpes simplex 2 infection
  • Herpes in pregnancy
  • Herpes simplex
  • Herpes simplex infection of buttock
  • Herpes simplex infection of skin
  • Herpes simplex type 1 infection
  • Herpes simplex type 2 infection
  • Herpes simplex without complication
  • Herpesvirus infection
  • Infection caused by herpes simplex virus co-occurrent with human immunodeficiency virus infection
  • Infection of skin and/or mucous membrane caused by Herpes virus
  • Nongenital herpes simplex
  • Nongenital recurrent herpes simplex
  • Otitis externa of left external auditory canal caused by human herpesvirus 3
  • Otitis externa of right external auditory canal caused by human herpesvirus 3
  • Primary herpes simplex
  • Recurrent herpes simplex
  • Recurrent herpes simplex infection of buttock
  • Recurrent skin infection

Clinical Classification

Clinical Information

  • Encephalitis, Herpes Simplex

    an acute (or rarely chronic) inflammatory process of the brain caused by simplexvirus infections which may be fatal. the majority of infections are caused by human herpesvirus 1 (herpesvirus 1, human) and less often by human herpesvirus 2 (herpesvirus 2, human). clinical manifestations include fever; headache; seizures; hallucinations; behavioral alterations; aphasia; hemiparesis; and coma. pathologically, the condition is marked by a hemorrhagic necrosis involving the medial and inferior temporal lobe and orbital regions of the frontal lobe. (from adams et al., principles of neurology, 6th ed, pp751-4)
  • Herpes Genitalis

    infection of the genitals (genitalia) with herpes simplex virus in either the males or the females.
  • Herpes Labialis

    herpes simplex, caused by type 1 virus, primarily spread by oral secretions and usually occurring as a concomitant of fever. it may also develop in the absence of fever or prior illness. it commonly involves the facial region, especially the lips and the nares. (dorland, 27th ed.)
  • Herpes Simplex

    a group of acute infections caused by herpes simplex virus type 1 or type 2 that is characterized by the development of one or more small fluid-filled vesicles with a raised erythematous base on the skin or mucous membrane. it occurs as a primary infection or recurs due to a reactivation of a latent infection. (dorland, 27th ed.)
  • Herpes Simplex Virus Protein Vmw65

    trans-acting protein that combines with host factors to induce immediate early gene transcription in herpes simplex virus.
  • Herpes Simplex Virus Vaccines

    vaccines or candidate vaccines used to prevent infection with viruses from the genus simplexvirus. this includes vaccines for hsv-1 and hsv-2.
  • Herpesvirus 1, Human

    the type species of simplexvirus causing most forms of non-genital herpes simplex in humans. primary infection occurs mainly in infants and young children and then the virus becomes latent in the dorsal root ganglion. it then is periodically reactivated throughout life causing mostly benign conditions.
  • Herpesvirus 2, Human

    a species of simplexvirus associated with genital infections (herpes genitalis). it is transmitted by sexual intercourse and close personal contact.
  • Keratitis, Herpetic

    a superficial, epithelial herpesvirus hominis infection of the cornea, characterized by the presence of small vesicles which may break down and coalesce to form dendritic ulcers (keratitis, dendritic). (dictionary of visual science, 3d ed)
  • Simplexvirus

    a genus of the family herpesviridae, subfamily alphaherpesvirinae, consisting of herpes simplex-like viruses. the type species is herpesvirus 1, human.
  • Stomatitis, Herpetic

    stomatitis caused by herpesvirus hominis. it usually occurs as acute herpetic stomatitis (or gingivostomatitis), an oral manifestation of primary herpes simplex seen primarily in children and adolescents.
  • Herpesvirus Infection

    an infection caused by a herpesvirus.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Herpes simplex infection NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert B00.9 to ICD-9-CM

  • ICD-9-CM Code: 054.8 - H simplex complicat NOS
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
  • ICD-9-CM Code: 054.9 - Herpes simplex NOS
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Herpes Simplex

Herpes is an infection that is caused by a herpes simplex virus (HSV). Oral herpes causes cold sores around the mouth or face. Genital herpes affects the genitals, buttocks or anal area. Genital herpes is a sexually transmitted disease (STD). It affects the genitals, buttocks or anal area. Other herpes infections can affect the eyes, skin, or other parts of the body. The virus can be dangerous in newborn babies or in people with weak immune systems.

There are two types of HSV:

  • HSV type 1 most commonly causes cold sores. It can also cause genital herpes.
  • HSV type 2 is the usual cause of genital herpes, but it also can infect the mouth.

HSV spreads through direct contact. Some people have no symptoms. Others get sores near the area where the virus has entered the body. They turn into blisters, become itchy and painful, and then heal.

Most people have outbreaks several times a year. Over time, you get them less often. Medicines to help your body fight the virus can help lessen symptoms and decrease outbreaks.

[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.