ICD-10 Codes for Gastroenterology Billing: GI Code Reference
Reference for ICD-10-CM codes used in gastroenterology billing. Covers K00-K95 digestive system codes, common GI diagnoses, and coding for GI procedures.
Using GASTROENTEROLOGY on a Claim
Reference for ICD-10-CM codes used in gastroenterology billing. Covers K00-K95 digestive system codes, common GI diagnoses, and coding for GI procedures.
Source: AAPC Codify - ICD-10-CM 2025
GASTROENTEROLOGY in Detail
What does GASTROENTEROLOGY cover in detail?
Gastroenterology ICD-10-CM codes span K00–K95 for digestive system conditions, covering GERD, IBD, colorectal cancer, and hepatic disorders, each requiring documentation-supported specificity.
See our ICD-10 codes hub and gastroenterology billing guide for code selection guidance, and contact our medical coding team for GI-specific support.
Using GASTROENTEROLOGY Correctly
How do I use GASTROENTEROLOGY correctly?
Specificity Requirements
ICD-10-CM requires the highest level of specificity. Use the most specific code available that is supported by clinical documentation.
Documentation Support
Clinical notes must clearly state the diagnosis that supports this code. Coders assign codes based on documented provider statements.
Procedure Linkage
Link this diagnosis code accurately to all procedures billed to demonstrate medical necessity for each service.
Payer Coverage
Verify that the payer covers the services billed with this diagnosis code. Some payers have limited coverage lists for specific ICD-10 codes.
Common Gastroenterology ICD-10-CM Codes
| ICD-10 Code | Description | Category |
|---|---|---|
| K21.0 | Gastro-esophageal reflux disease with esophagitis | GERD |
| K21.9 | Gastro-esophageal reflux disease without esophagitis | GERD |
| K57.30 | Diverticulosis of large intestine without perforation or abscess without bleeding | Diverticular disease |
| K57.32 | Diverticulitis of large intestine without perforation or abscess without bleeding | Diverticular disease |
| K80.20 | Calculus of gallbladder without cholecystitis without obstruction | Cholelithiasis |
| K80.00 | Calculus of gallbladder with acute cholecystitis without obstruction | Cholelithiasis |
| K50.90 | Crohn's disease of small intestine, unspecified, without complications | Crohn's disease |
| K51.90 | Ulcerative colitis, unspecified, without complications | Ulcerative colitis |
Source: AAPC Codify - ICD-10-CM 2025
Related Billing Resources
GASTROENTEROLOGY, Frequently Asked Questions
Gastroenterology ICD-10-CM codes span K00–K95 for digestive system conditions, covering GERD, IBD, colorectal cancer, and hepatic disorders, each requiring documentation-supported specificity.
See our ICD-10 codes hub and gastroenterology billing guide for code selection guidance, and contact our medical coding team for GI-specific support.
Having Trouble With This Code?
Our billing specialists can help you resolve denials, improve coding accuracy, and reduce claim rejections.
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