1. ICD-10-CM Codes
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2. A00-B99 Certain infectious and parasitic diseases
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3. B85-B89 Pediculosis, acariasis and other infestations
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4. B85- Pediculosis and phthiriasis
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5. 2021 ICD-10-CM Diagnosis Code B85.3

2021 ICD-10-CM Diagnosis Code B85.3

Phthiriasis

2016 2017 2018 2019 2020 2021 Billable/Specific Code

• B85.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2021 edition of ICD-10-CM B85.3 became effective on October 1, 2020.
• This is the American ICD-10-CM version of B85.3 - other international versions of ICD-10 B85.3 may differ.

• Infestation by phthirus pubis
• Pubic lice

• 606 Minor skin disorders with mcc
• 607 Minor skin disorders without mcc

Convert B85.3 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change

• Applicable To: B85.4
  ICD-10-CM Diagnosis Code B85.4

  Mixed pediculosis and phthiriasis

  2016 2017 2018 2019 2020 2021 Billable/Specific Code

  Applicable To

  • Infestation classifiable to more than one of the categories B85.0-B85.3

• Crabs, meaning pubic lice B85.3
• Infestation B88.9
  ICD-10-CM Diagnosis Code B88.9

  Infestation, unspecified

  2016 2017 2018 2019 2020 2021 Billable/Specific Code

  Applicable To

  • Infestation (skin) NOS
  • Infestation by mites NOS
  • Skin parasites NOS
  • eyelid
    • in (due to)
      • phthiriasis B85.3
  • Pediculus B85.2
    ICD-10-CM Diagnosis Code B85.2

    Pediculosis, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • pubis B85.3 (any site)
  • Phthirus (pubis) (any site) B85.3
  • crab-lice B85.3
  • pubic, louse B85.3
• Lice (infestation) B85.2
  ICD-10-CM Diagnosis Code B85.2

  Pediculosis, unspecified

  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • crab B85.3
  • pubic B85.3 (Phthirus pubis)
• Pediculosis (infestation) B85.2
  ICD-10-CM Diagnosis Code B85.2

  Pediculosis, unspecified

  2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • pubis B85.3 (pubic louse) (any site)
  • vulvae B85.3
• Phthiriasis (pubis) B85.3

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.