K20.0 — Eosinophilic esophagitis
K20.0 is a billable, specific ICD-10-CM code for eosinophilic esophagitis. It is valid for submission on a claim.
Risk adjustment
K20.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
K20.0 is named in 12 Medicare coverage policies — 12 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
- A56559Billing and Coding: Allergy Skin Testing
- A56621Billing and Coding: Swallowing Studies for Dysphagia
- A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
How K20.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K20.0.
- Esophagitis›eosinophilic
Related codes at this level
Codes that share K20. If K20.0 is not quite right, the correct code is usually one of these.
Questions about K20.0
- Is K20.0 a billable ICD-10-CM code?
- Yes. K20.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does K20.0 sit in the tabular list?
- Diseases of the digestive system (K00-K95), in the block Diseases of esophagus, stomach and duodenum (K20-K31).