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    v1.0.30
    OpenPayerBilling CodesHelminthiasesICD-10-CM b81-other-intestinal-helminthiases
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    ICD-10-CM Code For Other Intestinal Helminthiases Not Elsewhere Classified: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B81 includes intestinal helminth infections that are not categorized in other specific helminthiasis codes, covering various parasitic worm infections of the gastrointestinal tract. These ICD-10-CM diagnosis codes are used to document clinical encounters involving intestinal parasitic infections, capturing disease manifestations, severity, and any complications affecting the digestive system. Accurate coding within the ICD-10-CM B81 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM B81: Other Intestinal Helminthiases, Not Elsewhere Classified Overview

    This group encompasses intestinal helminth infections that are not classified elsewhere in the International Classification of Diseases, Tenth Revision, Clinical Modification. These parasitic infections primarily affect the gastrointestinal tract and can cause symptoms ranging from mild gastrointestinal upset to significant malabsorption or obstruction. Accurate coding is important for complete clinical documentation and can affect proper claim adjudication and reimbursement.

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    When to Use

    Use a code from this group when a clinician documents an intestinal helminth infection that cannot be classified to a more specific helminthiasis code. These codes apply for encounters where the primary diagnosis is an unspecified or other specified intestinal worm infection affecting the digestive system.

    ICD-10-CM Codes

    6 rows

    ICD-10-CM CodeDescription
    B81.0Anisakiasis
    B81.1Intestinal capillariasis
    B81.2Trichostrongyliasis
    B81.3Intestinal angiostrongyliasis
    B81.4Mixed intestinal helminthiases
    B81.8Other specified intestinal helminthiases

    DRG Codes

    5 rows

    DRG CodeDescription
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC
    867Other Infectious and Parasitic Diseases Diagnoses with MCC
    868Other Infectious and Parasitic Diseases Diagnoses with CC
    869Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • An adult presents to the emergency department with sudden onset severe abdominal pain, high fever, and profuse watery diarrhea after returning from travel to a tropical region where helminth infections are endemic; stool ova and parasite examination identifies numerous Ascaris lumbricoides eggs and adult worms on visualization. The acute parasitic intestinal infestation with systemic symptoms prompts urgent treatment and a principal diagnosis from this helminth group is assigned. Typical codes: B81.0
    • A child in primary care has persistent intermittent abdominal cramps, perianal itching at night, and growth faltering over several months; a tape test confirms Enterobius vermicularis infection and the clinician documents ongoing infestation requiring family-wide management. This chronic, nonemergent intestinal helminth infection in a pediatric patient is coded from this group for outpatient management and follow-up. Typical codes: B81.3
    • An elderly nursing home resident with dementia is hospitalized for aspiration pneumonia and is noted on chart review to have chronic diarrhea and malnutrition; stool studies identify hookworm infection contributing to iron-deficiency anemia and weight loss as a comorbidity affecting overall care. The intestinal helminthiasis is coded as a comorbid condition impacting the patient’s hospitalization and nutritional management. Typical codes: B81.2, B81.8

    Related Codes

    B65-SCHISTOSOMIASIS-BILHARZIASIS

    ICD-10-CM Code For Schistosomiasis Bilharziasis: Group Overview

    B66-OTHER-FLUKE-INFECTIONS

    ICD-10-CM Code For Other Fluke Infections: Group Overview

    B67-ECHINOCOCCOSIS

    ICD-10-CM Code For Echinococcosis: Group Overview

    B68-TAENIASIS

    ICD-10-CM Code For Taeniasis: Group Overview

    B69-CYSTICERCOSIS

    ICD-10-CM Code For Cysticercosis: Group Overview

    B70-DIPHYLLOBOTHRIASIS-AND-SPARGANOSIS

    ICD-10-CM Code For Diphyllobothriasis And Sparganosis: Group Overview

    B71-OTHER-CESTODE-INFECTIONS

    ICD-10-CM Code For Other Cestode Infections: Group Overview

    B72-DRACUNCULIASIS

    ICD-10-CM Code For Dracunculiasis: Group Overview

    B73-ONCHOCERCIASIS

    ICD-10-CM Code For Onchocerciasis: Group Overview

    B74-FILARIASIS-AND-FILARIAL-INFECTIONS

    ICD-10-CM Code For Filariasis: Group Overview

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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