ICD-10-CM 2027
ICD-10 code for gastrointestinal mucositis
From the official ICD-10-CM alphabetic index entry “Mucositis (ulcerative) › gastrointestinal”. Page updated September 29, 2026.
About coding gastrointestinal mucositis
The ICD-10-CM code for gastrointestinal mucositis is K92.81 (Gastrointestinal mucositis (ulcerative)).
Within K92.8 (other specified diseases of the digestive system), K92.81 is specifically for gastrointestinal mucositis (ulcerative). Related codes cover other specified diseases of the digestive system (K92.89).
The conditions in its Excludes2 note aren't part of K92.81, but may be coded alongside it if the patient has both: mucositis (ulcerative) of vagina and vulva (N76.81), nasal mucositis (ulcerative) (J34.81) and oral mucositis (ulcerative) (K12.3-).
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.
Common questions about gastrointestinal mucositis ICD-10 codes
What is the ICD-10 code for gastrointestinal mucositis?
- K92.81 — Gastrointestinal mucositis (ulcerative).
Is K92.81 billable?
- Yes. K92.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K92.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K92.81 as a principal diagnosis.
Is K92.81 a CC or MCC?
- K92.81 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.