Alphabetic Index FY2027

K92.81

Gastrointestinal mucositis (ulcerative)

FY2027Chapter 11: Diseases of the digestive system/K90–K95 Other diseases of the digestive system

BillableComplete code, valid to report
Care settingsHome Health Primary · MMTA - Gastrointestinal tract and Genitourinary systemHospital CC

K92.81 (also written K9281) is a billable ICD-10-CM diagnosis code for gastrointestinal mucositis (ulcerative). It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category K92 (Other diseases of digestive system). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code also instruction, 1 Excludes1 entry and 11 Excludes2 entries.

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

This code
  • type of associated therapy, such as:
    • antineoplastic and immunosuppressive drugs (T45.1X-)
    • radiological procedure and radiotherapy (Y84.2)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from K92 Other diseases of digestive system

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

This code
  • mucositis (ulcerative) of vagina and vulva (N76.81)
  • nasal mucositis (ulcerative) (J34.81)
  • oral mucositis (ulcerative) (K12.3-)
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Gastrointestinal tract and Genitourinary system clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

Hospital CC

Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 75 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix C

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry