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    OpenPayerBilling CodesHelminthiasesICD-10-CM b82-unspecified-intestinal-parasitism
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    ICD-10-CM Code For Unspecified Intestinal Parasitism: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B82 includes intestinal helminth infections and unspecified intestinal parasitism diagnoses where the specific causative worm is not documented, covering conditions such as nonspecific helminthiasis of the intestine. These ICD-10-CM diagnosis codes are used to document clinical encounters for parasitic intestinal infections, capturing disease presence, distribution in the gastrointestinal tract, and any complications or severity noted. Accurate coding within the ICD-10-CM B82 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM B82: Unspecified Intestinal Parasitism Overview

    The ICD-10-CM B82 group represents infections caused by intestinal helminths where a specific parasite species is not identified or documented. These diagnoses target the gastrointestinal tract and parasitic infestations that can produce symptoms such as abdominal pain, diarrhea, and malabsorption. Accurate coding matters for correct clinical records and appropriate reimbursement because specificity affects claim adjudication and public health reporting.

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    When to Use

    Use a code from this group when a patient is diagnosed with an intestinal helminth infection but the exact causative organism is not specified in the medical record. These codes apply to clinical encounters documenting symptoms or findings attributable to intestinal parasitism without organism-level confirmation.

    ICD-10-CM Codes

    2 rows

    ICD-10-CM CodeDescription
    B82.0Intestinal helminthiasis, unspecified
    B82.9Intestinal parasitism, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC
    392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC

    Typical Clinical Scenarios

    • An adult presents to urgent care with several weeks of intermittent abdominal cramping, bloating, and unexplained weight loss after returning from travel to a rural area with poor sanitation. Stool ova and parasite testing is ordered and returns non-specific findings consistent with parasitic infection but without species identified, so an unspecified intestinal parasitism diagnosis is assigned to capture active helminthic infestation pending or in absence of organism specification. Typical codes: B82.9
    • A pediatric patient has chronic intermittent diarrhea, perianal itching, and eosinophilia on CBC; multiple stool studies have been repeatedly positive for ova on microscopic exam but the laboratory cannot definitively identify the helminth species. Because the child has ongoing intestinal parasitism without species confirmation, the unspecified code is used for problem list documentation and follow-up care. Typical codes: B82.0, B82.9
    • An elderly nursing home resident is admitted for acute dehydration and electrolyte imbalance after several days of profuse watery stools; stool testing indicates helminthic infection but results are inconclusive regarding species, and the parasitic infestation is contributing to the acute medical decline as a comorbidity. The unspecified intestinal parasitism code is recorded to reflect the helminthic cause of the acute complication when species-level diagnosis is not available. Typical codes: B82.9

    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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