2026 ICD-10-CM Diagnosis Code B87.1Wound myiasis

ICD-10-CM Codes›A00–B99›B85-B89›B87

ICD-10-CM B87.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B87.1 is a billable ICD-10-CM diagnosis code for wound myiasis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Parasitic, other specified and unspecified infections.

Code Identity

ICD-10-CM Code
B87.1
Billable Status
Yes — Valid for Submission
Code Describes
Wound myiasis
Short Description
Wound myiasis
Same as the full description in the CMS dataset.
Parent Code
B87
Myiasis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB85-B89Pediculosis, acariasis and other infestations
CategoryB87Myiasis
This CodeB87.1Wound myiasis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Wound myiasis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Traumatic myiasis

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.

    • Myiasis(cavernous)
      • traumatic
    • Myiasis(cavernous)
      • wound

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

  • Myiasis

    the invasion of living tissues of man and other mammals by dipterous larvae.

  • Screw Worm Infection

    infection with larvae of the blow fly cochliomyia hominivorax (callitroga americanum), a common cause of disease in livestock in the southern and southwestern u.s.a.

  • Oestrus Myiasis|Infestation by Estrus

    infestation by oestrus ovis (sheep nasal botfly). in humans, it may cause ophthalmomyiasis and nasal myiasis.

  • Myiasis

    the infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.

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 B87.1 to ICD-9-CMHistory

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

ICD-9-CM
134.0 Myiasis
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 B87.1Overview

Is B87.1 (Myiasis) a billable code?

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

What MS-DRG does B87.1 group to?

When wound myiasis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of B87.1?

Under the General Equivalence Mappings, wound myiasis converts to ICD-9-CM 134.0 (myiasis). 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.