B81.2 – Trichostrongyliasis

ICD-10-CM 2027 diagnosis code · Helminthiases

Billable code

ICD-10-CM code B81.2

Code: B81.2 (claims format: B812)
Description: Trichostrongyliasis
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 1. Certain infectious and parasitic diseases (A00-B99)
Block: B65-B83 Helminthiases
Parent codes: B81

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

B81 – Other intestinal helminthiases, not elsewhere classified

Excludes1 (not coded here):

angiostrongyliasis due to:
Angiostrongylus cantonensis (B83.2)
Parastrongylus cantonensis (B83.2)

Index terms for B81.2

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in B81

B81.0 – AnisakiasisBillable
B81.1 – Intestinal capillariasisBillable
B81.3 – Intestinal angiostrongyliasisBillable
B81.4 – Mixed intestinal helminthiasesBillable
B81.8 – Other specified intestinal helminthiasesBillable

Frequently asked questions

What is ICD-10 code B81.2?

B81.2 is the ICD-10-CM code for trichostrongyliasis, in the block B65-B83 (Helminthiases).

Is B81.2 a billable code?

Yes. B81.2 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does B81.2 belong to?

It belongs to category B81 – Other intestinal helminthiases, not elsewhere classified.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.