[위내시경 조직검사 코드] - internal use only G: without Helicobacter, H: Helicobacter-associated Chronic inactive gastritis G1 or H1: Chronic gastritis, inactive G2 or H2: Chronic gastritis, inactive, with erosion G3 or H3: Chronic gastritis, inactive with atrophy G4 or H4: Chronic gastritis, inactive with atrophy and intestinal metaplasia Chronic active gastritis G5 or H5: Chronic gastritis, active G6 or H6: Chronic gastritis, active, with erosion G7 or H7: Chronic gastritis, active with atrophy G8 or H8: Chronic gastritis, active with atrophy and intestinal metaplasia Atypia G9 or H9: Chronic gastritis, active, with erosion and regenerative foveolar epithelium G10 or H10: Chronic gastritis, active, with erosion and regenerative foveolar epithelium with atypia (SN) Note: Follow-up is recommended. G11: Atypical glands with high grade dysplasia (SN) Note: Follow-up and re-biopsy is recommended.