Pediculosis, acariasis and other infestations (B85-B89) ICD-10-CM
The B85–B89 section covers pediculosis, acariasis and other infestations with 28 ICD-10-CM diagnosis codes, of which 23 are billable in fiscal year 2026. The section is organized into the 5 code ranges listed below.
Code Ranges in This Section 5 ranges · 28 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| B85 | Pediculosis and phthiriasis (B85) | 6 | 5 |
| B86 | Scabies (B86) | 1 | 1 |
| B87 | Myiasis (B87) | 11 | 9 |
| B88 | Other infestations (B88) | 9 | 7 |
| B89 | Unspecified parasitic disease (B89) | 1 | 1 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the B85–B89 Code Range
ICD-10 codes B85 to B89 cover a wide range of parasitic infestations including lice (pediculosis), scabies, myiasis (fly larvae infestation), acariasis (mite infestations), and other specified or unspecified parasitic diseases. These codes help precisely identify infestations caused by various parasites affecting skin and other body parts.
This code range is used to classify conditions such as pediculosis capitis (head lice, also called infestation by Pediculus humanus capitis), pediculosis corporis (body lice or parasitic melanoderma), and phthiriasis (infestation by pubic lice or Phthirus pubis). The chapter also includes scabies (caused by Sarcoptes scabiei mite), which presents with intense itching and skin rash. Myiasis codes specify fly larvae causing cutaneous, wound, ocular, nasopharyngeal, aural, and other localized infestations. Moreover, the range covers acariasis, addressing various mite infestations such as grocer's itch and allergic reactions caused by house dust mites. Other arthropod infestations like ticks, bed bugs, and fleas also fall under this chapter, including tungiasis (sandflea infestation). Finally, it includes codes for unspecified infestations and parasitic diseases that may affect multiple organs or systems, providing comprehensive coding options for diverse parasitic infections.
Questions About This Page
How many codes are in the B85-B89 range?
The B85-B89 range contains 28 ICD-10-CM diagnosis codes in FY 2026. 23 of them are billable, and the rest are category headers that organize the section.
What conditions does B85-B89 cover?
The range covers pediculosis, acariasis and other infestations. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
