ICD-10 Diagnosis Code B85.2

Pediculosis, unspecified

Diagnosis Code B85.2

ICD-10: B85.2
Short Description: Pediculosis, unspecified
Long Description: Pediculosis, unspecified
This is the 2017 version of the ICD-10-CM diagnosis code B85.2

Code Classification
  • Certain infectious and parasitic diseases
    • Pediculosis, acariasis and other infestations (B85-B89)
      • Pediculosis and phthiriasis (B85)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code B85.2 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Dermatoses caused by Crustacea
  • Dermatosis caused by lice
  • Infestation caused by Anoplura
  • Infestation caused by biting lice
  • Infestation caused by Haematopinus
  • Infestation caused by Linognathus
  • Infestation caused by Mallophaga
  • Infestation caused by Pediculus
  • Infestation caused by Solenopotes
  • Louse infestation
  • Sea lice bite

Information for Patients

Head Lice

Also called: Pediculosis

Head lice are parasitic wingless insects. They live on people's heads and feed on their blood. An adult louse is about the size of a sesame seed. The eggs, called nits, are even smaller - about the size of a knot in thread. Lice and nits are found on or near the scalp, most often at the neckline and behind the ears.

Lice spread by close person-to-person contact. It is possible, but not common, to get lice by sharing personal belongings such as hats or hairbrushes. Children ages 3-11 and their families get head lice most often. Personal hygiene has nothing to do with getting head lice. Head lice do not spread disease.

Symptoms are

  • Tickling feeling in the hair
  • Frequent itching
  • Sores from scratching
  • Irritability and difficulty sleeping. Head lice are most active in the dark.

Treatment is recommended for people who have an active infestation of head lice. All household members and other close contacts should be checked and treated if necessary. Some experts also recommend treating anyone who shares a bed with an infested person. It is important to treat everyone at the same time.

Centers for Disease Control and Prevention

  • Head lice
  • Treating Head Lice (Food and Drug Administration)

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