In simple words: A gastric ulcer is a sore in the lining of the stomach. This includes erosions (acute) of the stomach, peptic ulcers in the pylorus (the opening from the stomach to the small intestine), and peptic ulcers in other parts of the stomach.It’s important to note that this code doesn't include acute gastritis or a peptic ulcer that isn't specified by location.

Gastric ulcer. Includes erosion (acute) of stomach, pylorus ulcer (peptic), and stomach ulcer (peptic). Use additional code to identify alcohol abuse and dependence (F10.-). Excludes1: acute gastritis (K29.0-) and peptic ulcer NOS (K27.-)

Example 1: A patient presents with burning epigastric pain, nausea, and vomiting. Endoscopy reveals an acute erosion in the stomach lining, consistent with a gastric ulcer., A patient with a history of chronic alcohol use presents with hematemesis (vomiting blood). Imaging reveals a chronic gastric ulcer with active bleeding., A patient experiences sudden, severe abdominal pain.A perforated gastric ulcer is diagnosed during emergency surgery.

Documentation should include the type of ulcer (acute/chronic), location, presence or absence of hemorrhage and perforation, and any relevant comorbidities.

** Excludes2: 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).