ICD-10-CM 2027
ICD-10 code for external hirudiniasis
From the official ICD-10-CM alphabetic index entry “Hirudiniasis › external”. Page updated September 29, 2026.
About coding external hirudiniasis
The ICD-10-CM code for external hirudiniasis is B88.3 (External hirudiniasis).
Within B88 (other infestations), B88.3 is specifically for external hirudiniasis. Related codes cover other acariasis (B88.0), Tungiasis [sandflea infestation] (B88.1), other arthropod infestations (B88.2), other specified infestations (B88.8) and infestation, unspecified (B88.9).
The conditions in its Excludes2 note aren't part of B88.3, but may be coded alongside it if the patient has both: internal hirudiniasis (B83.4).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about external hirudiniasis ICD-10 codes
What is the ICD-10 code for external hirudiniasis?
- B88.3 — External hirudiniasis.
Is B88.3 billable?
- Yes. B88.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B88.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B88.3 as a principal diagnosis.
Is B88.3 a CC or MCC?
- No. B88.3 is neither a CC nor an MCC under MS-DRG v44.0.