Pediculosis and phthiriasis (B85) ICD-10-CM
The B85 code range covers pediculosis and phthiriasis with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the B85 Range 6 codes · 5 billable
About the B85 Code Range
The ICD-10 code section B85 covers pediculosis and phthiriasis, which are infestations caused by different kinds of lice. These codes are used to classify and document various lice-related conditions affecting the human body.
This section includes codes for specific louse infestations such as B85.0 for Pediculus humanus capitis (head lice, also called pediculosis capitis), B85.1 for Pediculus humanus corporis (body lice, linked to skin conditions like maculae ceruleae), and B85.3 for Phthirus pubis (pubic lice, known as phthiriasis). There is also B85.2 for unspecified lice infestations and B85.4 for mixed infestations involving both pediculosis and phthiriasis. Recognizing these terms—like infestation by Pediculus or Phthirus lice, louse infestation, pediculosis capitis, or parasitic melanoderma—helps medical coders accurately select the appropriate ICD-10 code for patient records, treatment billing, and epidemiological tracking. Using these codes ensures precise documentation of lice-related dermatoses and supports effective healthcare management.
Questions About This Page
How many billable codes are in the B85 range?
Of the 6 codes in this range, 5 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 B85 range classify?
The range classifies pediculosis and phthiriasis. 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.
