ICD-10-CM Code B81.2


Version 2021 Billable Code

Valid for Submission

B81.2 is a billable code used to specify a medical diagnosis of trichostrongyliasis. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code B81.2 might also be used to specify conditions or terms like disease due to superfamily trichostrongyloidea, infection by cooperia, infection by haemonchus, infection by haemonchus contortus, infection by marshallagia, infection by mecistocirrus, etc

Short Description:Trichostrongyliasis
Long Description:Trichostrongyliasis

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 B81.2 are found in the index:


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

  • Disease due to superfamily Trichostrongyloidea
  • Infection by Cooperia
  • Infection by Haemonchus
  • Infection by Haemonchus contortus
  • Infection by Marshallagia
  • Infection by Mecistocirrus
  • Infection by Molineus
  • Infection by Ostertagia
  • Infection by Ostertagia ostertagi
  • Infection by Trichostrongylus axei
  • Infection by Trichostrongylus colubriformis
  • Infection by Trichostrongylus orientalis
  • Trichostrongyliasis

Diagnostic Related Groups

The ICD-10 code B81.2 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert B81.2 to ICD-9

  • 127.6 - Trichostrongyliasis

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Helminthiases (B65-B83)
      • Other intestinal helminthiases, not elsewhere classified (B81)

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
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients

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.

Parasites range in size from tiny, one-celled organisms called protozoa to worms that can be seen with the naked eye. Some parasitic diseases occur in the United States. Contaminated water supplies can lead to Giardia infections. Cats can transmit toxoplasmosis, which is dangerous for pregnant women. Others, like malaria, are common in other parts of the world.

If you are traveling, it's important to drink only water you know is safe. Prevention is especially important. There are no vaccines for parasitic diseases. Some medicines are available to treat parasitic infections.

  • Amebiasis (Medical Encyclopedia)
  • Amebic liver abscess (Medical Encyclopedia)
  • Ascariasis (Medical Encyclopedia)
  • Creeping eruption (Medical Encyclopedia)
  • Stool ova and parasites exam (Medical Encyclopedia)
  • Taeniasis (Medical Encyclopedia)

[Learn More]