Alphabetic Index FY2027

K94.12

Enterostomy infection

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

BillableComplete code, valid to report
Care settingsHome Health Primary · Complex Nursing InterventionsHospital CCIPF Comorbidity · Artificial Openings – Digestive & Urinary

K94.12 (also written K9412) is a billable ICD-10-CM diagnosis code for enterostomy infection. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 20 codes in category K94 (Complications of artificial openings of the digestive system). The Alphabetic Index lists it under 4 entries. Its coding notes include a Use additional code instruction and 8 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

This code
  • code to specify type of infection, such as:

Excludes2

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

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 Complex Nursing Interventions 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 10 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

IPF Comorbidity

On the CMS IPF comorbidity list.

Comorbidity categoryFactor
Artificial Openings – Digestive & Urinary1.07
It counts as a comorbidity when reported as a secondary diagnosis and actively treated during the stay. An IPF receives only one adjustment within a category and can receive adjustments in more than one category.

Source: CMS IPF PPS FY 2027 final rule (CMS-1847-F), Addendum B-3 (comorbidity codes with adjustment factor); effective for discharges on or after October 1, 2026

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 4 entries