What does ICD-10-CM code K21.9 mean?
K21.9 represents Gastro-esophageal reflux disease without esophagitis. This gastrointestinal condition is classified under Chapter 11 (Diseases of the Digestive System) for documentation and billing purposes. This condition is commonly abbreviated as GERD, Gastroesophageal reflux disease in clinical documentation. Coders frequently reference this code as gerd icd 10 code, gerd icd, gerd icd 10, or gerd.
Depending on the clinical diagnosis, management may involve rabeprazole, omeprazole, nizatidine. Refer to current clinical guidelines and provider documentation for treatment decisions.
Code category and hierarchy
- Chapter: 11 – Diseases of the Digestive System (K00-K95)
- Category: K21
- Code: K21.9 – Gastro-esophageal reflux disease without esophagitis
Guideline notes and coding considerations
Important Guideline Note
Assign K21.9 only when documentation clearly supports this diagnosis. Review the excludes notes and ensure no conflicts with other assigned codes.
- Specificity: Assign K21.9 only when documentation supports this specific diagnosis.
Learn the underlying rules in the ICD-10 Coding Guidelines, Specificity Requirements.
Documentation tips (what coders should confirm)
- Verify the clinical documentation supports the use of K21.9
- Query the provider for greater specificity if clinical details suggest a more precise code
Validate K21.9 Against ICD 10 CM Coding Guidelines
Check this code against official guidelines for conflicts and compliance issues.
Related ICD-10 codes
Frequently Asked Questions
The ICD-10-CM code for gerd code is K21.9, which represents gastro-esophageal reflux disease without esophagitis. This code is also commonly referenced as gerd icd, gerd icd 10, gerd. Verify this code using the ICD Code Auditor to ensure guideline compliance.
Yes. K21.9 is an active ICD-10-CM diagnosis code used to classify gastro-esophageal reflux disease without esophagitis for clinical documentation, reporting, and medical billing purposes.
Use the ICD Code Auditor to check K21.9 against official ICD-10-CM coding guidelines. The tool validates by fiscal year and patient gender to identify potential conflicts.
Documentation should clearly describe the clinical condition represented by K21.9 (Gastro-esophageal reflux disease without esophagitis). Include relevant clinical findings, diagnostic test results, provider assessment, and the treatment plan. The diagnosis must be supported by the medical record and not based solely on lab results without clinical interpretation.
Sources
Reviewed by: Certified ICD-10 Coding & Risk Adjustment Specialist
Learn more about our Clinical Coding Review Process