ICD Code K21-

ICD code K21- is gastro-esophageal reflux disease (GERD), a condition where stomach acid frequently flows back into the tube connecting your mouth and stomach (esophagus), causing symptoms like heartburn and acid regurgitation.

1. Presence of frequent or persistent heartburn (burning sensation in the chest, often after eating)

2. Regurgitation of stomach contents into the mouth or throat

3. Symptoms worsen when lying down or after meals

4. Evidence of esophageal mucosal injury or inflammation on endoscopy

5. Chronic cough, hoarseness, or sore throat not attributable to other causes

6. Chest pain not related to cardiac conditions, associated with reflux symptoms

7. Absence of alternative diagnoses explaining the symptoms

Relevant CPT codes that may be used to treat ICD code K21- include:

- 43235 (Esophagogastroduodenoscopy, diagnostic)

- 43239 (Esophagogastroduodenoscopy with biopsy)

- 91010 (Esophageal motility study)

- 91035 (Esophagogastric junction study, e.g., Bravo pH monitoring)

- 91034 (Esophageal pH monitoring)

- 99213, 99214 (Office or other outpatient visit, established patient)

- 99203, 99204 (Office or other outpatient visit, new patient)

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