ICD-10-CM 2027
ICD-10 code for acariasis
From the official ICD-10-CM alphabetic index entry “Acariasis”. Page updated September 29, 2026.
About coding acariasis
The ICD-10-CM code for acariasis is B88.09 (Other acariasis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on B88.09.
Within B88.0, choose B88.09 (Other acariasis) only when documentation doesn't support a more specific option: infestation by Demodex mites (B88.01).
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.
More specific acariasis codes (official index)
- scabies B86 — Scabies
Common questions about acariasis ICD-10 codes
What is the ICD-10 code for acariasis?
- B88.09 — Other acariasis. More specific codes apply when the documentation supports them: B86.
What is the ICD-10 code for scabies acariasis?
- B86 — Scabies.
Is B88.09 billable?
- Yes. B88.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B88.09 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B88.09 as a principal diagnosis.
Is B88.09 a CC or MCC?
- No. B88.09 is neither a CC nor an MCC under MS-DRG v44.0.