K25.1 Acute gastric ulcer with perforation

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from K25 Gastric ulcer

Includes

• erosion (acute) of stomach
• pylorus ulcer (peptic)
• stomach ulcer (peptic)

Excludes1 (never code together)

• acute gastritis (K29.0-)
• peptic ulcer NOS (K27.-)

Use additional code

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

Risk adjustment (HCC)

• CMS-HCC V28: HCC 78 — Intestinal Obstruction/Perforation
• CMS-HCC V22: HCC 33 — Intestinal Obstruction/Perforation
• ESRD V24: HCC 33

MS-DRG index

Defines the logic of DRG(s) 380-382 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 531.10 Acute gastric ulcer with perforation, without mention of obstruction (approximate)

Code annotations containing back-references to K25.1

Back-references to K25

• Code First: F54 Psychological and behavioral factors associated with disorders or diseases classified elsewhere ("gastric ulcer (K25.-)")
• Type 1 Excludes: K29.0 Acute gastritis ("erosion (acute) of stomach (K25.-)")
• Type 1 Excludes: K92.2 Gastrointestinal hemorrhage, unspecified ("peptic ulcer with hemorrhage (K25-K28)")

Diagnosis Index entries for K25.1

• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › stomach (eroded) (peptic) (round) › acute › with › perforation

Nearby codes

• K25 Gastric ulcer
• K25.0 Acute gastric ulcer with hemorrhage
• K25.1 Acute gastric ulcer with perforation (this code)
• K25.2 Acute gastric ulcer with both hemorrhage and perforation
• K25.3 Acute gastric ulcer without hemorrhage or perforation
• K25.4 Chronic or unspecified gastric ulcer with hemorrhage
• K25.5 Chronic or unspecified gastric ulcer with perforation
• K25.6 Chronic or unspecified gastric ulcer with both hemorrhage and perforation