2026 ICD-10-CM Diagnosis Code B70.0Diphyllobothriasis
ICD-10-CM Codes›A00–B99›B65-B83›B70
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
B70.0 is a billable ICD-10-CM diagnosis code for diphyllobothriasis. 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 14 closely related codes. 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.
- Diphyllobothriasis
- Disease caused by cestode of Diphyllobothriidea
- Disease caused by Diphyllobothriidae
- Infection by Bothriocephalus
- Infection by Braunia
- Infection by Cyathocephalus
- Infection by Digramma
- Infection by Diphyllobothrium latum
- Infection by Diphyllobothrium pacificum
- Infection by Ligula
- Infection by Schistocephalus
- Infection by Triaenophorus
- Intestinal diphyllobothriasis
- Megaloblastic anemia caused by fish tapeworm
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Diphyllobothrium (adult) (latum) (pacificum) infection
- Fish tapeworm (infection)
Type 2 Excludes
- larval diphyllobothriasis B70.1
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Bothriocephalus (latus) B70.0
broad tapeworm B70.0
Diphyllobothrium (adult) (latum) (intestinal) (pacificum) B70.0
fish tapeworm B70.0
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Diphyllobothriasis
infection with tapeworms of the genus diphyllobothrium.Diphyllobothriasis
an infection that is caused by the tapeworm diphyllobothrium latum and related species; it is transmitted via consumption of raw or undercooked fish, and symptoms include abdominal discomfort, diarrhea, vomiting, fatigue, weight loss, and vitamin b12 deficiency.
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
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert B70.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About B70.0Overview
What is the ICD-10 code for diphyllobothriasis?
The ICD-10-CM code for diphyllobothriasis is B70.0 (sometimes written as B700). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is B70.0 (Diphyllobothriasis and sparganosis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report diphyllobothriasis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does B70.0 group to?
When diphyllobothriasis 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 B70.0 a CC or MCC?
CMS lists B70.0 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 14 closely related codes in its exclusion list.
What is the ICD-9 equivalent of B70.0?
Under the General Equivalence Mappings, diphyllobothriasis converts to ICD-9-CM 123.4 (diphyllobothrias intest). The mapping is a direct match.
