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Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Acute gastrojejunal ulcer with perforation

See Tabular List: K28.1

K28, Gastrojejunal ulcer

K28.1, Acute gastrojejunal ulcer with perforation

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes

K28.1

Acute gastrojejunal ulcer with perforation

Open the shareable code page for K28.1→
billableHCC mapped

Includes

official source
  • anastomotic ulcer (peptic) or erosion
  • gastrocolic ulcer (peptic) or erosion
  • gastrointestinal ulcer (peptic) or erosion
  • gastrojejunal ulcer (peptic) or erosion
  • jejunal ulcer (peptic) or erosion
  • marginal ulcer (peptic) or erosion
  • stomal ulcer (peptic) or erosion

Excludes 1

official source
  • primary ulcer of small intestine (K63.3)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source

Not listed for this effective period.

Use Additional

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

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy
HCC Buddy
Alphabetic Index and Tabular path
HCC Buddy public API, FY2026 Apr updateSource load source requiredSource year 2026Updated 2026-04-01

Index trail

Acute gastrojejunal ulcer with perforation

See Tabular List: K28.1

K28, Gastrojejunal ulcer

K28.1, Acute gastrojejunal ulcer with perforation

Selected code, source checked for the selected effective period

Commonly confused codes

official source

Not listed for this effective period.

Code details and official notes

K28.1

Acute gastrojejunal ulcer with perforation

Open the shareable code page for K28.1→
billableHCC mapped

Includes

official source
  • anastomotic ulcer (peptic) or erosion
  • gastrocolic ulcer (peptic) or erosion
  • gastrointestinal ulcer (peptic) or erosion
  • gastrojejunal ulcer (peptic) or erosion
  • jejunal ulcer (peptic) or erosion
  • marginal ulcer (peptic) or erosion
  • stomal ulcer (peptic) or erosion

Excludes 1

official source
  • primary ulcer of small intestine (K63.3)

Excludes 2

official source

No Excludes 2 note is listed in this source payload.

Code First

official source

Not listed for this effective period.

Use Additional

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

Code Also

official source

Not listed for this effective period.

7th character

official source

Not listed for this code in the selected Tabular payload.

Placeholder X

official source

Not listed for this code in the selected Tabular payload.

Laterality

official source

No laterality instruction is listed for this code in the selected Tabular payload.

Effective period

source required
  • FY2026 Apr update
  • Source year 2026
  • Updated 2026-04-01
  • HCC Buddy public API
HCC Buddy Insights

HCC Mapping

HCC 78 Intestinal Obstruction/Perforation (V28)HCC 33 Intestinal Obstruction/Perforation (V24)RxHCC source requiredHCC 33 Intestinal Obstruction/Perforation (ESRD/PACE)HCC 42 HHS-HCC 42; HHS-HCC 2026 benefit year (HHS-HCC)

RAF Value

V28: RAF: 0.326V24: RAF: 0.219RxHCC RAF source requiredESRD/PACE: RAF: 0.078HHS-HCC: RAF: Varies by metal level

Model Period

FY2026 Apr update

Source

source required

Audit Caution

Close codes need documentation support before selection. Do not assume relationships.
Reviewed by the HCC Buddy Coding Team

HCC Buddy workflow band

HCC mapping, RAF, MEAT, source trail, and audit caution stay in view.

MEAT supportaudit cautionsource required

V28

HCC 78

Intestinal Obstruction/Perforation

RAF: 0.326

V24

HCC 33

Intestinal Obstruction/Perforation

RAF: 0.219

ESRD/PACE

HCC 33

Intestinal Obstruction/Perforation

RAF: 0.078

HHS-HCC

HCC 42

HHS-HCC 42; HHS-HCC 2026 benefit year

RAF: Varies by metal level

MEAT checklist

Reviewed by the HCC Buddy Coding Team

Monitor, Evaluate, Assess, or Treat must be supported in the provider note.

HCC Buddy guidance, not official ICD-10-CM text.

Audit caution

Reviewed by the HCC Buddy Coding Team

Close codes need documentation support before selection. Do not assume relationships.

HCC Buddy guidance, not official ICD-10-CM text.

Reviewer sign-off

Reviewed by the HCC Buddy Coding Team

MEAT, documentation support, audit cautions, and close-code guidance are reviewed and approved for this effective period.

HCC Buddy enrichment is separate from official source text.

Last updated: April 1, 2026 · Not a substitute for official coding guidelines. No PHI or patient data.
HCC Buddy Code Card
FY 2026 Apr update
K28.1Billable

Acute gastrojejunal ulcer with perforation

CMS-HCC V28

HCC 78

RAF 0.326

CMS-HCC V24

HCC 33

RAF 0.219

ESRD/PACE

HCC 33

RAF 0.078

Reviewed by the HCC Buddy Coding TeamFY2026 Apr update

Code

K28.1

V28 HCC

HCC 78

RAF

0.326

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