2027 ICD-10-CM Diagnosis Code B78Strongyloidiasis

ICD-10-CM Codes›A00–B99›B65-B83›B78

ICD-10-CM B78
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B78 is a non-billable ICD-10-CM category code for strongyloidiasis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as B78.0, B78.1, B78.7, and B78.9.

Code Identity

ICD-10-CM Code
B78
Billable Status
No — Non-Billable Category
Code Describes
Strongyloidiasis
Short Description
Strongyloidiasis
Same as the full description in the CMS dataset.
Chapter
B65-B83
Helminthiases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB65-B83Helminthiases
CategoryB78Strongyloidiasis
This CodeB78Strongyloidiasis

Specific Coding for StrongyloidiasisOverview

Non-specific codes like B78 require more characters. Use one of these billable codes instead:

  • Use B78.0 for Intestinal strongyloidiasis

  • Use B78.1 for Cutaneous strongyloidiasis

  • Use B78.7 for Disseminated strongyloidiasis

  • Use B78.9 for Strongyloidiasis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B78: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • trichostrongyliasis (B81.2)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name B78, its category, or a range that includes it.

Applicable To 1

These notes mention B78.

  • B81.4 Mixed intestinal helminthiases
    Infection due to intestinal helminths classified to more than one of the categories B65.0-B81.3 and B81.8 names B65.0-B81.3, which includes this code

Code First 1

These codes say to code first a condition named in the note, and B78 is one of the conditions named.

  • K67 Disorders of peritoneum in infectious diseases classified elsewhere
    helminthiasis (B65.0 -B83.9) names B65.0 -B83.9, which includes this code

Clinical InformationClinical

  • Strongyloidiasis

    infection with nematodes of the genus strongyloides. the presence of larvae may produce pneumonitis and the presence of adult worms in the intestine could lead to moderate to severe diarrhea.

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About B78Overview

What is the ICD-10 code for strongyloidiasis?

B78 is the ICD-10-CM category for strongyloidiasis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is B78 (Strongyloidiasis) a billable code?

No. This is a category header that groups the codes for strongyloidiasis, and headers cannot be submitted on claims. Claims for strongyloidiasis need a more specific code from this category, such as B78.0, B78.1, and B78.7.

Can B78 be reported with B81.2?

Not as a rule. The Excludes1 note on B78 lists "trichostrongyliasis (B81.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).