ICD-10-CM 2027 diagnosis code
B80Enterobiasis
B80 is a valid, billable ICD-10-CM code for enterobiasis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data
About B80
B80 is the ICD-10-CM diagnosis code for Enterobiasis. It belongs to block B65-B83 (helminthiases) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 127.4 (Enterobiasis).
Coding notes
- oxyuriasis
- pinworm infection
- threadworm infection
Notes that apply from higher levels
Instructions written at a parent level also apply to B80.
Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.
Alphabetic index entries
21 entriesTerms in the official ICD-10-CM index that lead to B80.
- Appendicopathia oxyurica
- Disease, diseased › pinworm
- Enterobiasis
- Enterobius vermicularis (infection) (infestation)
- Infection, infected, infective (opportunistic) › Enterobius vermicularis
- Infection, infected, infective (opportunistic) › Oxyuris vermicularis
- Infection, infected, infective (opportunistic) › pinworm
- Infection, infected, infective (opportunistic) › threadworm
- Infestation › Enterobius vermicularis
- Infestation › helminth › intestinal › enterobiasis
- Infestation › nematode NEC (intestinal) › Enterobius vermicularis
- Infestation › nematode NEC (intestinal) › physaloptera
- Infestation › Oxyuris vermicularis
- Infestation › pinworm
- Infestation › threadworm
- Oxyuriasis
- Oxyuris vermicularis (infestation)
- Pinworm (disease) (infection) (infestation)
- Seatworm (infection) (infestation)
- Threadworm (infection) (infestation)
- Vaginitis (acute) (circumscribed) (diffuse) (emphysematous) (nonvenereal) (ulcerative) › in (due to) › pinworm infection
Codes whose notes reference B80
- N77.1Code first
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 06 · Diseases and Disorders of the Digestive System
ICD-9-CM equivalent
Converter →- 127.4Enterobiasisexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about B80
Is B80 billable?
- Yes. B80 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B80 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B80 as a principal diagnosis.
Is B80 a CC or MCC?
- B80 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does B80 group to?
- B80 is used in the MS-DRG v44.0 logic for MS-DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC) and MS-DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for B80?
- The CMS General Equivalence Mappings map B80 to ICD-9-CM 127.4.