Myiasis (B87) ICD-10-CM
The B87 code range covers myiasis with 11 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- infestation by larva of flies
Codes in the B87 Range 11 codes · 9 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B87 range.
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.
About the B87 Code Range
The ICD-10 code B87 covers the diagnosis of myiasis, an infestation caused by fly larvae in various body sites. These codes specify the affected area and type of myiasis, assisting in accurate medical classification and treatment planning.
Myiasis (B87) refers to the infestation by parasitic fly larvae in humans. The codes range from B87.0 for cutaneous myiasis—also known as furuncular myiasis or cutaneous screw-worm myiasis—to specialized forms like B87.1 for wound myiasis and B87.2 for ocular myiasis, including conditions like ophthalmic myiasis or external ocular myiasis. Other site-specific codes include B87.3 for nasopharyngeal myiasis, B87.4 for aural myiasis, and B87.81 for genitourinary myiasis. Intestinal infestation is captured under B87.82. When the site is not specified, B87.9 is used, covering various infestations such as those caused by Dermatobia hominis or Gasterophilus species. These ICD-10 codes enable healthcare providers to document precise clinical details for parasitic infestations by fly larvae, facilitating effective diagnosis and intervention.
Questions About This Page
How many billable codes are in the B87 range?
Of the 11 codes in this range, 9 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the B87 range classify?
The range classifies myiasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
