2026 ICD-10-CM Diagnosis Code B82.0Intestinal helminthiasis, unspecified
ICD-10-CM Codes›A00–B99›B65-B83›B82
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B82.0 is a billable ICD-10-CM diagnosis code for intestinal helminthiasis, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 23 closely related codes. Coders also document this condition as infection caused by Nematoda. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Infection caused by Nematoda
- Intestinal infection caused by Cestoda and/or Trematoda and/or Phylum Nematoda
- Intestinal nematode infection
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) A09
metazoal B82.0
Helminthiasis See Also: Infestation, helminth;
intestinal B82.0
intestinal B82.0
roundworm (large) NEC B82.0
intestinal B82.0
Worm (s) (infection) (infestation) See Also: Infestation, helminth;
in intestine NEC B82.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Intestinal Nematode Infection
an infection in the gastrointestinal tract by a nematode.
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
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Convert B82.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B82.0Overview
What is the ICD-10 code for intestinal helminthiasis, unspecified?
The ICD-10-CM code for intestinal helminthiasis, unspecified is B82.0 (sometimes written as B820). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is B82.0 (Unspecified intestinal parasitism) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report intestinal helminthiasis, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B82.0 group to?
When intestinal helminthiasis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.
Is B82.0 a CC or MCC?
CMS lists B82.0 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 23 closely related codes in its exclusion list.
What is the ICD-9 equivalent of B82.0?
Under the General Equivalence Mappings, intestinal helminthiasis, unspecified converts to ICD-9-CM 127.9 (intest helminthiasis NOS). The mapping is a direct match.
