2026 ICD-10-CM Diagnosis Code B75Trichinellosis

ICD-10-CM Codes›A00–B99›B65-B83›B75

ICD-10-CM B75
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B75 is a billable ICD-10-CM diagnosis code for trichinellosis. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
B75
Billable Status
Yes — Valid for Submission
Code Describes
Trichinellosis
Chapter
B65-B83
Helminthiases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB65-B83Helminthiases
CategoryB75Trichinellosis
This CodeB75Trichinellosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Diaphragmatic trichiniasis
  • Diaphragmitis
  • Disease caused by Trichinelloidea
  • Infection by larvae of Trichinella
  • Infection by larvae of Trichinella spiralis
  • Infection caused by larvae of Trichinella britovi
  • Infection caused by larvae of Trichinella nativa
  • Infection caused by larvae of Trichinella nelsoni
  • Infection caused by larvae of Trichinella papuae
  • Infection caused by larvae of Trichinella pseudospiralis
  • Infection caused by Trichinella
  • Invasive trichinosis
  • Migratory trichinosis
  • Nematode myositis
  • Parasitic myositis
  • Trichinella murelli infection
  • Trichinosis myositis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • infection due to Trichinella species
  • trichiniasis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Encephalitis(chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)
      • trichinosis
    • Infection, infected, infective(opportunistic)
      • Trichinella (spiralis)
    • Infestation
      • helminth
        • intestinal
          • trichinellosis
    • Infestation
      • Trichinella (spiralis)
    • Myositis
      • in (due to)
        • trichinellosis
    • Trichinella spiralis(infection) (infestation)
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • ankle
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • foot
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • forearm
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • hand
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • lower leg
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • multiple sites
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • pelvic region
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • shoulder region
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • specified site NEC
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • thigh
    • Trichinellosis, trichiniasis, trichinelliasis, trichinosis
      • with muscle disorder
        • upper arm

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Trichinellosis

    an infection with trichinella. it is caused by eating raw or undercooked meat that is infected with larvae of nematode worms trichinella genus. all members of the trichinella genus can infect human in addition to trichinella spiralis, the traditional etiological agent. it is distributed throughout much of the world and is re-emerging in some parts as a public health hazard and a food safety problem.

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 B75 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
124 Trichinosis
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B75Overview

Is B75 (Trichinellosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report trichinellosis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B75 group to?

When trichinellosis 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.

What is the ICD-9 equivalent of B75?

Under the General Equivalence Mappings, trichinellosis converts to ICD-9-CM 124 (trichinosis). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.