ICD-10-CM 2027
ICD-10 code for melena
From the official ICD-10-CM alphabetic index entry “Melena”. Page updated September 29, 2026.
About coding melena
The ICD-10-CM code for melena is K92.1 (Melena). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K92.1.
Within K92 (other diseases of digestive system), K92.1 is specifically for melena. Related codes cover hematemesis (K92.0), gastrointestinal hemorrhage, unspecified (K92.2), other specified diseases of the digestive system (K92.8) and disease of digestive system, unspecified (K92.9).
Don't report K92.1 together with the conditions in its Excludes1 note: occult blood in feces (R19.5).
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.
More specific melena codes (official index)
- with ulcer - code by site under Ulcer, with hemorrhage K27.4 — Chronic or unspecified peptic ulcer, site unspecified, with hemorrhage
- due to swallowed maternal blood P78.2 — Neonatal hematemesis and melena due to swallowed maternal blood
- newborn, neonatal P54.1 — Neonatal melena
- due to swallowed maternal blood P78.2 — Neonatal hematemesis and melena due to swallowed maternal blood
Don't confuse with (Excludes1 for K92.1)
- occult blood in feces (R19.5)
Common questions about melena ICD-10 codes
What is the ICD-10 code for melena?
- K92.1 — Melena. More specific codes apply when the documentation supports them: K27.4, P78.2, P54.1, P78.2.
Is K92.1 billable?
- Yes. K92.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K92.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K92.1 as a principal diagnosis.
Is K92.1 a CC or MCC?
- K92.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.