2026 ICD-10-CM Diagnosis Code K92.0Hematemesis

ICD-10-CM Codes›K00–K95›K90-K95›K92

ICD-10-CM K92.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K92.0 is a billable ICD-10-CM diagnosis code for hematemesis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 377 through 379, 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 72 closely related codes. Coders also document this condition as coffee ground vomiting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastrointestinal hemorrhage.

Code Identity

ICD-10-CM Code
K92.0
Billable Status
Yes — Valid for Submission
Code Describes
Hematemesis
Short Description
Hematemesis
Same as the full description in the CMS dataset.
Parent Code
K92
Other diseases of digestive system

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK90-K95Other diseases of the digestive system
CategoryK92Other diseases of digestive system
This CodeK92.0Hematemesis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Coffee ground vomiting
  • Hematemesis
  • Hematemesis of unknown cause
  • Occult blood detected in vomitus
  • Occult blood not detected in vomitus
  • Vomit contains blood
  • Vomit contains fresh blood
  • Vomit contains old blood
  • Vomiting blood - fresh

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG021
Gastrointestinal hemorrhage
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hematemesis

    vomiting of blood that is either fresh bright red, or older coffee-ground in character. it generally indicates bleeding of the upper gastrointestinal tract.

  • Upper Gastrointestinal Tract

    the segment of gastrointestinal tract that includes the esophagus; the stomach; and the duodenum.

  • Grade 1 Hematemesis, CTCAE

    mild symptoms; intervention not indicated

  • Grade 2 Hematemesis, CTCAE

    moderate symptoms; intervention indicated

  • Grade 3 Hematemesis, CTCAE

    hospitalization

  • Grade 4 Hematemesis, CTCAE

    life-threatening consequences; urgent intervention indicated

  • Grade 5 Hematemesis, CTCAE

    death

  • Hematemesis, CTCAE

    a disorder characterized by the vomiting of blood.

  • Hematemesis

    vomiting blood.

Patient EducationClinical

Gastrointestinal Bleeding

Your digestive or gastrointestinal (GI) tract includes the esophagus, stomach, small intestine, large intestine or colon, rectum, and anus. Bleeding can come from any of these areas. The amount of bleeding can be so small that only a lab test can find it.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K92.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
578.0 Hematemesis
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K92.0Overview

What is the ICD-10 code for hematemesis?

The ICD-10-CM code for hematemesis is K92.0 (sometimes written as K920). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is K92.0 (Other diseases of digestive system) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hematemesis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K92.0 group to?

When hematemesis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 377, 378, 379, 791, 793, with relative weights from 0.6304 to 4.1696 depending on complications. Higher weights mean higher Medicare reimbursement.

Is K92.0 a CC or MCC?

CMS lists K92.0 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 72 closely related codes in its exclusion list.

What is the ICD-9 equivalent of K92.0?

Under the General Equivalence Mappings, hematemesis converts to ICD-9-CM 578.0 (hematemesis). The mapping is a direct match.