ICD-10-CM 2027 diagnosis code
B78.0Intestinal strongyloidiasis
B78.0 is a valid, billable ICD-10-CM code for intestinal strongyloidiasis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About B78.0
B78.0 is the ICD-10-CM diagnosis code for intestinal strongyloidiasis. It belongs to category B78 (strongyloidiasis), 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.
Within B78 (strongyloidiasis), B78.0 is specifically for intestinal strongyloidiasis. Related codes cover cutaneous strongyloidiasis (B78.1), disseminated strongyloidiasis (B78.7) and unspecified (B78.9).
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), DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506), DRG 975 (HIV with Major Related Condition with CC, relative weight 1.3252) and DRG 976 (HIV with Major Related Condition without CC/MCC, relative weight 0.8124), in MDC 06 (Diseases and Disorders of the Digestive System) and MDC 25 (Human Immunodeficiency Virus Infections), 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 127.2 (strongyloidiasis).
Notes that apply from higher levels
Instructions written at a parent level also apply to B78.0.
› From B78 Strongyloidiasis
- trichostrongyliasis (B81.2)
Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.
Alphabetic index entries
4 entriesTerms in the official ICD-10-CM index that lead to B78.0.
- Diarrhea, diarrheal (disease) (infantile) (inflammatory) › Cochin-China › strongyloidiasis
- Diarrhea, diarrheal (disease) (infantile) (inflammatory) › strongyloidiasis
- Dysentery, dysenteric (catarrhal) (diarrhea) (epidemic) (hemorrhagic) (infectious) (sporadic) (tropical) › strongyloidiasis
- Strongyloidiasis, strongyloidosis › intestinal
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
MDC 25 · Human Immunodeficiency Virus Infections
ICD-9-CM equivalent
Converter →- 127.2Strongyloidiasisapproximate
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 B78.0
Is B78.0 billable?
- Yes. B78.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B78.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B78.0 as a principal diagnosis.
Is B78.0 a CC or MCC?
- B78.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does B78.0 group to?
- B78.0 is used in the MS-DRG v44.0 logic for MS-DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC), MS-DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC), MS-DRG 974 (HIV with Major Related Condition with MCC), MS-DRG 975 (HIV with Major Related Condition with CC) and MS-DRG 976 (HIV with Major Related Condition without CC/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 B78.0?
- The CMS General Equivalence Mappings map B78.0 to ICD-9-CM 127.2.