2026 ICD-10-CM Diagnosis Code B60.2Naegleriasis
ICD-10-CM Codes›A00–B99›B50-B64›B60
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B60.2 is a billable ICD-10-CM diagnosis code for naegleriasis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 867 through 869. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 12 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Amebic encephalitis
- Amebic infection of central nervous system
- Disease caused by Vahlkampfiidae
- Infection by Naegleria
- Infection by Naegleria gruberi
- Infection caused by Naegleria fowleri
- Infection of central nervous system caused by Naegleria
- Meningoencephalitis caused by Naegleria
- Meningoencephalitis due to free-living ameba
- Primary amebic encephalitis
- Primary amebic encephalitis caused by Naegleria fowleri
- Primary encephalitis
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Primary amebic meningoencephalitis
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.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
naegleriasis B60.2
Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
naegleriasis B60.2
Meningoencephalitis See Also: Encephalitis; G04.90
primary amebic B60.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Parasitic Diseases
Parasites are living things that use other living things - like your body - for food and a place to live. You can get them from contaminated food or water, a bug bite, or sexual contact. Some parasitic diseases are easily treated and some are not.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B60.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B60.2Overview
What is the ICD-10 code for naegleriasis?
The ICD-10-CM code for naegleriasis is B60.2 (sometimes written as B602). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is B60.2 (Other protozoal diseases, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report naegleriasis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B60.2 group to?
When naegleriasis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 868, 869, with relative weights from 0.7297 to 2.0932 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B60.2 a CC or MCC?
CMS lists B60.2 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 12 closely related codes in its exclusion list.
What is the ICD-9 equivalent of B60.2?
Under the General Equivalence Mappings, naegleriasis converts to ICD-9-CM 136.29 (infc free-liv amebae NEC). The mapping is approximate, so confirm the match fits the documentation.
