Version 2024

2024 ICD-10-CM Diagnosis Code B58


ICD-10-CM Code:
ICD-10 Code for:
Is Billable?
Not Valid for Submission
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Code Classification

  • Certain infectious and parasitic diseases
    • Protozoal diseases
      • Toxoplasmosis

B58 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of toxoplasmosis. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Toxoplasmosis

Non-specific codes like B58 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for toxoplasmosis:

  • B58.0 for Toxoplasma oculopathy - NON-BILLABLE CODE

  • Use B58.00 for Toxoplasma oculopathy, unspecified - BILLABLE CODE

  • Use B58.01 for Toxoplasma chorioretinitis - BILLABLE CODE

  • Use B58.09 for Other toxoplasma oculopathy - BILLABLE CODE

  • Use B58.1 for Toxoplasma hepatitis - BILLABLE CODE

  • Use B58.2 for Toxoplasma meningoencephalitis - BILLABLE CODE

  • Use B58.3 for Pulmonary toxoplasmosis - BILLABLE CODE

  • B58.8 for Toxoplasmosis with other organ involvement - NON-BILLABLE CODE

  • Use B58.81 for Toxoplasma myocarditis - BILLABLE CODE

  • Use B58.82 for Toxoplasma myositis - BILLABLE CODE

  • Use B58.83 for Toxoplasma tubulo-interstitial nephropathy - BILLABLE CODE

  • Use B58.89 for Toxoplasmosis with other organ involvement - BILLABLE CODE

  • Use B58.9 for Toxoplasmosis, unspecified - BILLABLE CODE

Clinical Information

  • Toxoplasmosis

    the acquired form of infection by toxoplasma gondii in animals and man.
  • Toxoplasmosis, Animal

    acquired infection of non-human animals by organisms of the genus toxoplasma.
  • Toxoplasmosis, Cerebral

    infections of the brain caused by the protozoan toxoplasma gondii that primarily arise in individuals with immunologic deficiency syndromes (see also aids-related opportunistic infections). the infection may involve the brain diffusely or form discrete abscesses. clinical manifestations include seizures, altered mentation, headache, focal neurologic deficits, and intracranial hypertension. (from joynt, clinical neurology, 1998, ch27, pp41-3)
  • Toxoplasmosis, Congenital

    prenatal protozoal infection with toxoplasma gondii which is associated with injury to the developing fetal nervous system. the severity of this condition is related to the stage of pregnancy during which the infection occurs; first trimester infections are associated with a greater degree of neurologic dysfunction. clinical features include hydrocephalus; microcephaly; deafness; cerebral calcifications; seizures; and psychomotor retardation. signs of a systemic infection may also be present at birth, including fever, rash, and hepatosplenomegaly. (from adams et al., principles of neurology, 6th ed, p735)
  • Toxoplasmosis, Ocular

    infection caused by the protozoan parasite toxoplasma in which there is extensive connective tissue proliferation, the retina surrounding the lesions remains normal, and the ocular media remain clear. chorioretinitis may be associated with all forms of toxoplasmosis, but is usually a late sequel of congenital toxoplasmosis. the severe ocular lesions in infants may lead to blindness.
  • Toxoplasma

    a genus of protozoa parasitic to birds and mammals. t. gondii is one of the most common infectious pathogenic animal parasites of man.
  • Adult Acquired Toxoplasmosis

    toxoplasmosis acquired in adulthood.
  • Aicardi-Goutieres Syndrome 1|AGS1|Cree Encephalitis|Encephalopathy, Familial Infantile, with Intracranial Calcification and Chronic Cerebrospinal Fluid Lymphocytosis|Pseudotoxoplasmosis Syndrome

    a heritable condition, caused by mutation(s) in the trex1 gene, encoding three-prime repair exonuclease 1. clinical features and onset may vary significantly, but is characterized in its most severe form by cerebral atrophy, leukodystrophy, intracranial calcifications, chronic cerebrospinal fluid (csf) lymphocytosis, and increased concentrations of csf alpha-interferon.
  • Congenital Toxoplasmosis

    toxoplasma infection that is present from birth.
  • Cordonnier Grade 2 Parasitic Complication, Toxoplasmosis Infection without Organ Involvement|Cordonnier Grade 2 Parasitic Complication|Grade 2 Toxoplasmosis Infection without Organ Involvement

    any toxoplasmosis infection without organ involvement.
  • Cordonnier Grade 3 Parasitic Complication, Central Nervous System or Other Organ Toxoplasmosis|Grade 3 CNS or Other Organ Toxoplasmosis

    any toxoplasmosis infection with central nervous system involvement or other organ involvement.
  • Nephrotic Syndrome - Toxoplasmosis Associated|Toxoplasmosis Associated Nephrotic Syndrome

    nephrotic syndrome associated with a toxoplasmosis infection.
  • TORCH Antibody Measurement|Toxoplasmosis, Other Infections, Rubella, Cytomegalovirus, and Herpes Simplex Virus (TORCH) Antibody Panel Measurement

    a group of blood tests used to detect antibodies to toxoplasma gondii, rubella, cytomegalovirus, and herpes simplex virus to rule out congenital infections. a group of other infections may be tested as well, including varicella-zoster virus, hepatitis b virus, human immunodeficiency virus, parvovirus b19, and syphilis.
  • TORCH Syndrome|TORCH Infection|Toxoplasmosis, Other Infections, Rubella, Cytomegalovirus, and Herpes Simplex Virus (TORCH) Syndrome

    a syndrome that results from a group of infections that affect the fetus or the newborn. the group of infections includes toxoplasma gondii, rubella, cytomegalovirus, herpes simplex virus, and other infections. the other infections include varicella-zoster virus, hepatitis b virus, human immunodeficiency virus, parvovirus b19, and syphilis. signs and symptoms include fever, feeding difficulties, petechial rash, jaundice, hepatosplenomegaly, chorioretinitis, and microcephaly.
  • Toxoplasmosis

    a parasitic disease contracted by the ingestion or fetal transmission of toxoplasma gondii.

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.


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • infection due to Toxoplasma gondii

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • congenital toxoplasmosis P37.1

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.