ICD10BillableValid for clinical use
ICD-10 Code K31.A12: Gastric intestinal metaplasia without dysplasia, involving the body (corpus)
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).
When is it used?
- May be used when a clinician documents gastric intestinal metaplasia without dysplasia, involving the body (corpus) in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
11Diseases of the digestive system (K00-K95)
block
K20-K31Diseases of esophagus, stomach and duodenum
category
K31Other diseases of stomach and duodenum
category
K31.AGastric intestinal metaplasia
category
K31.A1Gastric intestinal metaplasia without dysplasia
currentK31.A1
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
GastroenterologistGeneral Physician
Related codes
K31.A11Gastric intestinal metaplasia without dysplasia, involving the antrumcodeK31.A13Gastric intestinal metaplasia without dysplasia, involving the funduscodeK31.A14Gastric intestinal metaplasia without dysplasia, involving the cardiacodeK31.A15Gastric intestinal metaplasia without dysplasia, involving multiple sitescodeK31.A19Gastric intestinal metaplasia without dysplasia, unspecified sitecode
Sibling codes
K31.A11Gastric intestinal metaplasia without dysplasia, involving the antrumbillableK31.A13Gastric intestinal metaplasia without dysplasia, involving the fundusbillableK31.A14Gastric intestinal metaplasia without dysplasia, involving the cardiabillableK31.A15Gastric intestinal metaplasia without dysplasia, involving multiple sitesbillableK31.A19Gastric intestinal metaplasia without dysplasia, unspecified sitebillable
Coverage-related procedures and services
CPT 43235high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; DIAGNOSTIC, INCLUDING COLLECTION OF SPECIMEN(S) BY BRUSHING OR WASHING, WHEN PERFORMED (SEPARATE PROCEDURE)
Source: CMS coverage guidance
CPT 43270high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH ABLATION OF TUMOR(S), POLYP(S), OR OTHER LESION(S) (INCLUDES PRE- AND POST-DILATION AND GUIDE WIRE PASSAGE, WHEN PERFORMED)
Source: CMS coverage guidance
CPT 43244high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BAND LIGATION OF ESOPHAGEAL/GASTRIC VARICES
Source: CMS coverage guidance
CPT 43239high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH BIOPSY, SINGLE OR MULTIPLE
Source: CMS coverage guidance
CPT 43255high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH CONTROL OF BLEEDING, ANY METHOD
Source: CMS coverage guidance
CPT 43233high
ESOPHAGOGASTRODUODENOSCOPY, FLEXIBLE, TRANSORAL; WITH DILATION OF ESOPHAGUS WITH BALLOON (30 MM DIAMETER OR LARGER) (INCLUDES FLUOROSCOPIC GUIDANCE, WHEN PERFORMED)
Source: CMS coverage guidance
Coding guidelines
Common synonyms
Gastric intestinal metaplasia without dysplasia, involving the body (corpus)Gastric intestinal metaplasia without dysplasia, involving the bodyGastric intestinal metaplasia without dysplasia, involving the body corpus
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.