ICD-10-CM Code B45.1

Valid for Submission

B45.1 is a billable code used to specify a medical diagnosis of cerebral cryptococcosis. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code B45.1 might also be used to specify conditions or terms like cerebral cryptococcosis, cryptococcal meningitis, cryptococcus infection of the central nervous system, cryptococcus infection of the central nervous system, fungal infection of brain, fungal meningitis, etc

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code B45.1:

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.

• Cryptococcal meningitis
• Cryptococcosis meningocerebralis

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code B45.1 are found in the index:

• - Cryptococcosis, cryptococcus (infection) (neoformans) - B45.9
  • - cerebral - B45.1
  • - meningitis - B45.1
  • - meningocerebralis - B45.1

• - Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) - G04.90
  • - Torula, torular (cryptococcal) - B45.1

• - Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) - G03.9
  • - cryptococcal - B45.1
  • - Torula histolytica (cryptococcal) - B45.1

• - Meningoencephalomyelitis - See Also: Meningoencephalitis;
  • - due to
    • - Torula - B45.1

• - Meningomyelitis - See Also: Meningoencephalitis;
  • - cryptococcal - B45.1

Synonyms

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

• Cerebral cryptococcosis
• Cryptococcal meningitis
• Cryptococcus infection of the central nervous system
• Cryptococcus infection of the central nervous system
• Fungal infection of brain
• Fungal meningitis

Clinical Information

• MENINGITIS CRYPTOCOCCAL-. meningeal inflammation produced by cryptococcus neoformans an encapsulated yeast that tends to infect individuals with acquired immunodeficiency syndrome and other immunocompromised states. the organism enters the body through the respiratory tract but symptomatic infections are usually limited to the lungs and nervous system. the organism may also produce parenchymal brain lesions torulomas. clinically the course is subacute and may feature headache; nausea; photophobia; focal neurologic deficits; seizures; cranial neuropathies; and hydrocephalus. from adams et al. principles of neurology 6th ed pp721 2

Convert B45.1 to ICD-9

• 117.5 - Cryptococcosis (Combination Flag)
• 321.0 - Cryptococcal meningitis (Combination Flag)

Code Classification

• Certain infectious and parasitic diseases (A00–B99)
  • Mycoses (B35-B49)
    • Cryptococcosis (B45)

Code History

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
  (First year ICD-10-CM implemented into the HIPAA code set)
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

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