2026 ICD-10-CM Diagnosis Code K92.1Melena
ICD-10-CM Codes›K00–K95›K90-K95›K92
- Billable — Valid for Submission
- Not Chronic
K92.1 is a billable ICD-10-CM diagnosis code for melena. 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. Coders also document this condition as blood clots in stool. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gastrointestinal hemorrhage.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Blood clots in stool
- Blood-tinged feces
- Hematochezia
- Melena
- Melena due to gastrointestinal hemorrhage
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- occult blood in feces R19.5
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Abnormal, abnormality, abnormalities - See Also: Anomaly;
- stool (color) (contents) (mucus) - R19.5
- bloody - K92.1
- Hematochezia - See Also: Melena; - K92.1
- Melena - K92.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Abnormal, abnormality, abnormalities
- stool (color) (contents) (mucus)
- bloody
- Blood
- in
- feces
- Hematochezia
- Melena
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Melena
the black, tarry, foul-smelling feces that contain degraded blood.Feces
excrement from the intestines, containing unabsorbed solids, waste products, secretions, and bacteria of the digestive system.
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 K92.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K92.1Overview
Is K92.1 (Other diseases of digestive system) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report melena on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K92.1 group to?
When melena is the principal diagnosis on an inpatient stay, it groups to MS-DRG 377, 378, 379, with relative weights from 0.6304 to 1.8280 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of K92.1?
Under the General Equivalence Mappings, melena converts to ICD-9-CM 578.1 (blood in stool). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
