2026 ICD-10-CM Diagnosis Code B88.01Infestation by Demodex mites

ICD-10-CM Codes›A00–B99›B85-B89›B88

ICD-10-CM B88.01
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

B88.01 is a billable ICD-10-CM diagnosis code for infestation by Demodex mites. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607.

Code Identity

ICD-10-CM Code
B88.01
Billable Status
Yes — Valid for Submission
Code Describes
Infestation by Demodex mites
Short Description
Infestation by Demodex mites
Same as the full description in the CMS dataset.
Parent Code
B88.0
Other acariasis

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionB85-B89Pediculosis, acariasis and other infestations
CategoryB88Other infestations
This CodeB88.01Infestation by Demodex mites

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Demodectic blepharitis
  • Demodex acne
  • Infestation by Demodex
  • Infestation by Demodex canis
  • Infestation by Demodex cati
  • Infestation by Demodex criceti
  • Infestation by Demodex folliculorum
  • Infestation by Demodex phylloides
  • Parasitic infestation of eyelid caused by Demodex

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Demodex brevis infestation
  • Demodex folliculorum infestation

Code Also

  • , if applicable, eyelid inflammation H01.8

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Demodex folliculorum(infestation)
    • Dermatitis(eczematous)
      • due to
        • Demodex species
    • Dermatitis(eczematous)
      • eyelid
        • due to
          • Demodex species
    • Infestation
      • Acariasis
        • demodex folliculorum
    • Infestation
      • Demodex (brevis) (folliculorum)
    • Infestation
      • mites
        • Demodex

Code History & ChangesHistory

New Code B88.01 was added to the ICD-10-CM code set for FY 2026, effective October 1, 2025.

Replacement B88.01 replaces the following previously assigned code(s):

  • B88.0 - Other acariasis
FY 2026AddedAdded to the ICD-10-CM code setEffective October 1, 2025.
FY 2026CurrentRevised in the current code setEffective October 1, 2025 through September 30, 2026.

Questions About B88.01Overview

Is B88.01 (Other acariasis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report infestation by Demodex mites on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does B88.01 group to?

When infestation by Demodex mites is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.