ICD-10-CM 2027
ICD-10 code for Demodex infestation
From the official ICD-10-CM alphabetic index entry “Infestation › Demodex (brevis) (folliculorum)”. Page updated September 29, 2026.
About coding Demodex infestation
The ICD-10-CM code for Demodex infestation is B88.01 (Infestation by Demodex mites).
Within B88.0 (other acariasis), B88.01 is specifically for infestation by Demodex mites. Related codes cover other acariasis (B88.09).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Demodex infestation ICD-10 codes
What is the ICD-10 code for Demodex infestation?
- B88.01 — Infestation by Demodex mites.
Is B88.01 billable?
- Yes. B88.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B88.01 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B88.01 as a principal diagnosis.
Is B88.01 a CC or MCC?
- No. B88.01 is neither a CC nor an MCC under MS-DRG v44.0.