ICD-10-CM Code For Myiasis: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group B87 includes infestations by fly larvae (myiasis), covering cutaneous, wound-associated, cavitary, and unspecified forms of larval infestation. These ICD-10-CM diagnosis codes are used to document clinical encounters where larvae are identified in skin, wounds, body cavities, or other anatomic sites, capturing disease location and any associated complications. Accurate coding within the ICD-10-CM B87 group supports proper claim adjudication through clear documentation of diagnosis specificity and clinical complexity.

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ICD-10-CM B87: Myiasis Overview

The ICD-10-CM B87 group represents myiasis, infestations caused by fly larvae invading skin, wounds, body cavities, orifices, and occasionally internal organs. These conditions target the integumentary system and sites of tissue breakdown where larvae develop. Accurate coding matters for appropriate reimbursement because it captures the site, type, and complications of infestation for clinical and billing records.

When to Use

Use a code from this group when a clinical encounter documents the presence of fly larvae in skin, wounds, body cavities, orifices, or internal organs. Select the code that reflects the anatomic site and specificity documented in the medical record.

ICD-10-CM Codes

9 rows

ICD-10-CM Code	Description
B87.0	Cutaneous myiasis
B87.1	Wound myiasis
B87.2	Ocular myiasis
B87.3	Nasopharyngeal myiasis
B87.4	Aural myiasis
B87.81	Genitourinary myiasis
B87.82	Intestinal myiasis
B87.89	Myiasis of other sites
B87.9	Myiasis, unspecified

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

An adult returns from a tropical vacation with a painful, enlarging furuncle-like lesion on the scalp and visible moving larvae within the wound; they present to urgent care for removal and wound care. The clinician performs extraction of the larva and documents a parasitic infestation caused by fly larvae (myiasis) localized to the scalp, so a specific code for cutaneous myiasis is assigned. Typical codes: B87.0
An elderly bedbound nursing home resident develops maggot infestation of chronic decubitus ulcers with surrounding cellulitis; wound care and systemic evaluation are ordered due to concern for secondary infection. Because larvae are infesting open pressure wounds and complicating chronic skin breakdown, the encounter is coded to reflect myiasis of an open wound as an ongoing complication of the ulcers. Typical codes: B87.3, B87.89
A pediatric patient is brought to the emergency department after parents note larvae in the child’s external auditory canal with associated otalgia and purulent discharge; bedside removal and ENT consult are performed. The clinical documentation identifies myiasis involving the ear canal (a specific anatomic site) and the diagnosis from this group is assigned accordingly. Typical codes: B87.2

Related Codes

B85-PEDICULOSIS-AND-PHTHIRIASIS

ICD-10-CM Code For Pediculosis And Phthiriasis: Group Overview

B86-SCABIES-INFESTATION

ICD-10-CM Code For Scabies: Group Overview

B88-OTHER-INFESTATIONS

ICD-10-CM Code For Other Infestations: Group Overview

B89-UNSPECIFIED-PARASITIC-DISEASE

ICD-10-CM Code For Unspecified Parasitic Disease: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

9 rows

ICD-10-CM Code	Description
B87.0	Cutaneous myiasis
B87.1	Wound myiasis
B87.2	Ocular myiasis
B87.3	Nasopharyngeal myiasis
B87.4	Aural myiasis
B87.81	Genitourinary myiasis
B87.82	Intestinal myiasis
B87.89	Myiasis of other sites
B87.9	Myiasis, unspecified

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

An adult returns from a tropical vacation with a painful, enlarging furuncle-like lesion on the scalp and visible moving larvae within the wound; they present to urgent care for removal and wound care. The clinician performs extraction of the larva and documents a parasitic infestation caused by fly larvae (myiasis) localized to the scalp, so a specific code for cutaneous myiasis is assigned. Typical codes: B87.0
An elderly bedbound nursing home resident develops maggot infestation of chronic decubitus ulcers with surrounding cellulitis; wound care and systemic evaluation are ordered due to concern for secondary infection. Because larvae are infesting open pressure wounds and complicating chronic skin breakdown, the encounter is coded to reflect myiasis of an open wound as an ongoing complication of the ulcers. Typical codes: B87.3, B87.89
A pediatric patient is brought to the emergency department after parents note larvae in the child’s external auditory canal with associated otalgia and purulent discharge; bedside removal and ENT consult are performed. The clinical documentation identifies myiasis involving the ear canal (a specific anatomic site) and the diagnosis from this group is assigned accordingly. Typical codes: B87.2

Related Codes

B85-PEDICULOSIS-AND-PHTHIRIASIS

ICD-10-CM Code For Pediculosis And Phthiriasis: Group Overview

B86-SCABIES-INFESTATION

ICD-10-CM Code For Scabies: Group Overview

B88-OTHER-INFESTATIONS

ICD-10-CM Code For Other Infestations: Group Overview

B89-UNSPECIFIED-PARASITIC-DISEASE

ICD-10-CM Code For Unspecified Parasitic Disease: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Myiasis: Group Overview

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ICD-10-CM B87: Myiasis Overview

ICD-10-CM Code For Myiasis: Group Overview

Sign up for ICD-10-CM Code For Myiasis: Group Overview policy alerts

ICD-10-CM B87: Myiasis Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the B87 myiasis group?

How does specificity in coding within B87 affect reimbursement?

Which anatomic locations are explicitly represented by codes in the B87 group?

Which DRGs are related to B87 myiasis diagnoses?

What documentation elements should be present to select the correct B87 code?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-CM codes are included in the B87 myiasis group?

How does specificity in coding within B87 affect reimbursement?

Which anatomic locations are explicitly represented by codes in the B87 group?

Which DRGs are related to B87 myiasis diagnoses?

What documentation elements should be present to select the correct B87 code?

References