ICD-10-CM 2027 diagnosis code

B85Pediculosis and phthiriasis

Not billable — use a more specific code

B85 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About B85

B85 is the ICD-10-CM diagnosis code for pediculosis and phthiriasis. It belongs to block B85-B89 (pediculosis, acariasis and other infestations) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: B85.0 (capitis), B85.1 (corporis), B85.2 (unspecified), B85.3 (phthiriasis) and B85.4 (phthiriasis).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under B85

Notes that apply from higher levels

Instructions written at a parent level also apply to B85.

Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.

Code history

2016
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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about B85

Is B85 billable?: No. B85 is a header code. Report one of its more specific subcodes instead.