ICD-10-CM 2027
ICD-10 code for ear myiasis
From the official ICD-10-CM alphabetic index entry “Myiasis (cavernous) › ear (external) (middle)”. Page updated September 29, 2026.
About coding ear myiasis
The ICD-10-CM code for ear myiasis is B87.4 (Aural myiasis).
Within B87 (myiasis), B87.4 is specifically for Aural myiasis. Related codes cover cutaneous myiasis (B87.0), wound myiasis (B87.1), ocular myiasis (B87.2), nasopharyngeal myiasis (B87.3), of other sites (B87.8) and unspecified (B87.9).
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 ear myiasis ICD-10 codes
What is the ICD-10 code for ear myiasis?
- B87.4 — Aural myiasis.
Is B87.4 billable?
- Yes. B87.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B87.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B87.4 as a principal diagnosis.
Is B87.4 a CC or MCC?
- No. B87.4 is neither a CC nor an MCC under MS-DRG v44.0.