B85.3 – Phthiriasis
ICD-10-CM 2027 diagnosis code · Pediculosis, acariasis and other infestations
ICD-10-CM code
B85.3
- Code
B85.3(claims format:B853)- Description
- Phthiriasis
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B85-B89 Pediculosis, acariasis and other infestations
- Parent codes
- B85
Notes for B85.3
Applicable to:
- Infestation by crab-louse
- Infestation by Phthirus pubis
Index terms for B85.3
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in B85
Frequently asked questions
What is ICD-10 code B85.3?
B85.3 is the ICD-10-CM code for phthiriasis, in the block B85-B89 (Pediculosis, acariasis and other infestations).
Is B85.3 a billable code?
Yes. B85.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B85.3 belong to?
It belongs to category B85 – Pediculosis and phthiriasis.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.