All ICD10 Codes
B75Billable, valid for claims from October 1, 2026

Trichinellosis

In Helminthiases (B65-B83), chapter 1: Certain Infectious and Parasitic Diseases

  • B75 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under B65-B83 below.
  • As a secondary diagnosis it is a CC (complication or comorbidity), which can raise the MS-DRG payment. It doesn't count when the principal diagnosis is one of 156 closely related codes.
  • Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
  • AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).

Also indexed as: Encephalitis, trichinosis; Infection, Trichinella; Infestation, helminth, intestinal, trichinellosis; Infestation, Trichinella; Myositis, in, trichinellosis; Trichinella spiralis; Trichinellosis; Trichinellosis, with muscle disorder; Trichinellosis, with muscle disorder, ankle; Trichinellosis, with muscle disorder, foot; Trichinellosis, with muscle disorder, forearm; Trichinellosis, with muscle disorder, hand; Trichinellosis, with muscle disorder, lower leg; Trichinellosis, with muscle disorder, multiple sites; Trichinellosis, with muscle disorder, pelvic region; Trichinellosis, with muscle disorder, shoulder region; Trichinellosis, with muscle disorder, specified site NEC; Trichinellosis, with muscle disorder, thigh; Trichinellosis, with muscle disorder, upper arm

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Instructional notes

Includes: conditions that are coded here

  • infection due to Trichinella species
  • trichiniasis

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.

Read Section I.C.1 (page 19)

Other codes under B65-B83

Helminthiases (B65-B83)

B75 MS-DRGs

As the principal diagnosis, B75 groups to MS-DRG 867, 868, or 869 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Related conditions

Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.

B75 is in Parasitic, other specified and unspecified infections (INF009, its default category), with 254 codes. Others in it:

  • A06.0 Acute amebic dysentery
  • A06.1 Chronic intestinal amebiasis
  • A06.2 Amebic nondysenteric colitis
  • A06.3 Ameboma of intestine
  • A06.4 Amebic liver abscess
  • A06.5 Amebic lung abscess
  • A06.6 Amebic brain abscess
  • A06.7 Cutaneous amebiasis

Medicare coverage articles listing B75

These 2 Medicare billing and coding articles list B75 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.

Other codes that refer to B75

Notes on these codes point to B75.

  • G05 Code First: trichinellosis (B75)
  • M63 Code First: trichinellosis (B75)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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 more about parasitic diseases on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.

ICD-9-CM equivalent

Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).

  • 124 Trichinosis
ICD-9 to ICD-10 converter