K28.1 — Acute gastrojejunal ulcer with perforation

BillableMCC

Is K28.1 billable?

Yes — K28.1 is billable for FY2027. K28.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. K28.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

K28.1 at a glance

Code	K28.1
Description	Acute gastrojejunal ulcer with perforation
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does K28.1 group to?

K28.1 sits in MDC 06 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

380Complicated Peptic Ulcer with MCCmedical
381Complicated Peptic Ulcer with CCmedical
382Complicated Peptic Ulcer without CC/MCCmedical

As a secondary diagnosis, K28.1 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.

How is K28.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to K28.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

Ulcer, ulcerated, ulcerating, ulceration, ulcerative › gastrojejunal › acute › with › perforation

Excludes1 — never code together — inherited from K28

The conditions below can never be reported together with K28.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

primary ulcer of small intestine (K63.3)

Use additional code — inherited from K28

Report an additional code alongside K28.1 to fully describe the condition. K28.1 is sequenced first.

code to identify:
alcohol abuse and dependence (F10.-)

Excludes2 — not included here — inherited from Chapter 11

The conditions below are not part of K28.1, but a patient may have both at the same time. When documentation supports it, K28.1 and the excluded code may both be reported.

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)

Excludes2 — not included here — inherited from K20-K31

The conditions below are not part of K28.1, but a patient may have both at the same time. When documentation supports it, K28.1 and the excluded code may both be reported.

hiatus hernia (K44.-)

How long has K28.1 existed?

K28.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.