2027 ICD-10-CM Diagnosis Code B65Schistosomiasis [bilharziasis]

ICD-10-CM Codes›A00–B99›B65-B83›B65

ICD-10-CM B65
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

B65 is a non-billable ICD-10-CM category code for schistosomiasis [bilharziasis], so it cannot be submitted on claims. Use a more specific code from this category instead, such as B65.0, B65.1, B65.2, and B65.3.

Code Identity

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

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB65-B83Helminthiases
CategoryB65Schistosomiasis [bilharziasis]
This CodeB65Schistosomiasis [bilharziasis]

Specific Coding for Schistosomiasis [bilharziasis]Overview

Non-specific codes like B65 require more characters. Use one of these billable codes instead:

  • Use B65.0 for Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]

  • Use B65.1 for Schistosomiasis due to Schistosoma mansoni [intestinal schistosomiasis]

  • Use B65.2 for Schistosomiasis due to Schistosoma japonicum

  • Use B65.3 for Cercarial dermatitis

  • Use B65.8 for Other schistosomiasis

  • Use B65.9 for Schistosomiasis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to B65: 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.

On B65 itself
  • snail fever
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

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 B65, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming B65: they are not reported together with it, unless the two conditions are unrelated.

  • N35.1 Postinfective urethral stricture, not elsewhere classified
    urethral stricture associated with schistosomiasis (B65.-, N29)

Code First 2

These codes say to code first a condition named in the note, and B65 is one of the conditions named.

  • G07 Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
    schistosomiasis granuloma of brain (B65.-)
  • M63 Disorders of muscle in diseases classified elsewhere
    schistosomiasis (B65.-)

Code Also 1

These codes say B65 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • I27.21 Secondary pulmonary arterial hypertension
    schistosomiasis (B65.-)

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 B65Overview

What is the ICD-10 code for schistosomiasis [bilharziasis]?

B65 is the ICD-10-CM category for schistosomiasis [bilharziasis], but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is B65 (Schistosomiasis [bilharziasis]) a billable code?

No. This is a category header that groups the codes for schistosomiasis [bilharziasis], and headers cannot be submitted on claims. Claims for schistosomiasis [bilharziasis] need a more specific code from this category, such as B65.0, B65.1, and B65.2.