2026 ICD-10-CM Diagnosis Code B69.9Cysticercosis, unspecified

ICD-10-CM Codes›A00–B99›B65-B83›B69

ICD-10-CM B69.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B69.9 is a billable ICD-10-CM diagnosis code for cysticercosis, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 371 through 373. Coders also document this condition as cysticercosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
B69.9
Billable Status
Yes — Valid for Submission
Code Describes
Cysticercosis, unspecified
Short Description
Cysticercosis, unspecified
Same as the full description in the CMS dataset.
Parent Code
B69
Cysticercosis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB65-B83Helminthiases
CategoryB69Cysticercosis
This CodeB69.9Cysticercosis, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cysticercosis
  • Infection by Cysticercus fasciolaris
  • Infection by Cysticercus ovis
  • Infection by Cysticercus pisiformis
  • Infection by Cysticercus tarandi
  • Infection by Cysticercus tenuicollis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Cysticercosis, cysticerciasis

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF009
Parasitic, other specified and unspecified infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Cysticercosis

    infection with cysticercus, the larval form of the various tapeworms of the genus taenia (usually t. solium in man). in humans they penetrate the intestinal wall and invade subcutaneous tissue, brain, eye, muscle, heart, liver, lung, and peritoneum. brain involvement results in neurocysticercosis.

  • Neurocysticercosis

    infection of the brain, spinal cord, or perimeningeal structures with the larval forms of the genus taenia (primarily t. solium in humans). lesions formed by the organism are referred to as cysticerci. the infection may be subacute or chronic, and the severity of symptoms depends on the severity of the host immune response and the location and number of lesions. seizures represent the most common clinical manifestation although focal neurologic deficits may occur. (from joynt, clinical neurology, 1998, ch27, pp46-50)

  • Cysticercosis

    a parasitic infection caused by the larval form of taenia solium. it is a disseminated infection affecting the central nervous system, subcutaneous tissues, lungs, heart and liver. the most serious complications result from infection of the brain parenchyma. patients may develop seizures, hydrocephalus, encephalopathy and meningoencephalitis.

  • Neurocysticercosis

    a parasitic infection with tapeworms of the genus taenia affecting the brain. it is manifested with seizures and headaches.

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 B69.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
123.1 Cysticercosis
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About B69.9Overview

Is B69.9 (Cysticercosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report cysticercosis, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B69.9 group to?

When cysticercosis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 371, 372, 373, with relative weights from 0.7274 to 1.7731 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B69.9?

Under the General Equivalence Mappings, cysticercosis, unspecified converts to ICD-9-CM 123.1 (cysticercosis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.