K21.01 Gastro-esophageal reflux disease with esophagitis, with bleeding

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from K21 Gastro-esophageal reflux disease

Excludes1 (never code together)

• newborn esophageal reflux (P78.83)

MS-DRG index

Defines the logic of DRG(s) 368-370 in MDC 06.

Code annotations containing back-references to K21.01

Back-references to K21.0

• Type 1 Excludes: K20 Esophagitis ("esophagitis with gastro-esophageal reflux disease (K21.0-)")
• Type 1 Excludes: K20 Esophagitis ("reflux esophagitis (K21.0-)")

Back-references to K21

• Code Also: R63.31 Pediatric feeding disorder, acute ("gastro-esophageal reflux disease (K21.-)")
• Code Also: R63.32 Pediatric feeding disorder, chronic ("gastro-esophageal reflux disease (K21.-)")

Diagnosis Index entries for K21.01

• Allergy, allergic (reaction) (to) › milk protein › gastroesophageal reflux › with esophagitis (without bleeding) › with bleeding
• Disease, diseased › gastroesophageal reflux (GERD) › with esophagitis (without bleeding) › with bleeding
• Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) › due to gastrointestinal reflux disease (without bleeding) › with bleeding
• Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) › reflux › with bleeding
• Reflux › esophageal › with esophagitis (without bleeding) › with bleeding
• Reflux › gastroesophageal › with esophagitis (without bleeding) › with bleeding
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › esophagus (peptic) › due to › gastrointestinal reflux disease (without bleeding) › with bleeding

Nearby codes

• K21 Gastro-esophageal reflux disease
• K21.0 Gastro-esophageal reflux disease with esophagitis
• K21.00 Gastro-esophageal reflux disease with esophagitis, without bleeding
• K21.01 Gastro-esophageal reflux disease with esophagitis, with bleeding (this code)
• K21.9 Gastro-esophageal reflux disease without esophagitis