K20.0 Eosinophilic esophagitis

Billable ICD-10-CM code, FY2026.

Applies from K20 Esophagitis

Excludes1 (never code together)

• erosion of esophagus (K22.1-)
• esophagitis with gastro-esophageal reflux disease (K21.0-)
• reflux esophagitis (K21.0-)
• ulcerative esophagitis (K22.1-)

Excludes2 (not included here)

• eosinophilic gastritis or gastroenteritis (K52.81)

Use additional code

• code to identify:
• alcohol abuse and dependence (F10.-)

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 530.13 Eosinophilic esophagitis

Code annotations containing back-references to K20.0

Back-references to K20.0

• Type 2 Excludes: K52.2 Allergic and dietetic gastroenteritis and colitis ("allergic eosinophilic esophagitis (K20.0)")
• Type 2 Excludes: K52.81 Eosinophilic gastritis or gastroenteritis ("eosinophilic esophagitis (K20.0)")

Diagnosis Index entries for K20.0

• Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) › eosinophilic

Nearby codes

• K20 Esophagitis
• K20.0 Eosinophilic esophagitis (this code)
• K20.8 Other esophagitis
• K20.80 Other esophagitis without bleeding
• K20.81 Other esophagitis with bleeding
• K20.9 Esophagitis, unspecified
• K20.90 Esophagitis, unspecified without bleeding