K21.01 – Gastro-esophageal reflux disease with esophagitis, with bleeding
ICD-10-CM 2027 diagnosis code · Diseases of esophagus, stomach and duodenum
ICD-10-CM code
K21.01
- Code
K21.01(claims format:K2101)- Description
- Gastro-esophageal reflux disease with esophagitis, with bleeding
- Short description
- Gastro-esophageal reflux dis with esophagitis, with bleed
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K20-K31 Diseases of esophagus, stomach and duodenum
- Parent codes
- K21 › K21.0
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K21 – Gastro-esophageal reflux disease
Excludes1 (not coded here):
- newborn esophageal reflux (P78.83)
Block K20-K31
Excludes2 (not included here):
- hiatus hernia (K44.-)
Index terms for K21.01
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Esophagitis, reflux, with bleeding
- Reflux, esophageal, with esophagitis, with bleeding
- Reflux, gastroesophageal, with esophagitis, with bleeding
- Esophagitis, due to gastrointestinal reflux disease, with bleeding
- Disease, diseased, gastroesophageal reflux, with esophagitis, with bleeding
- Allergy, allergic, milk protein, gastroesophageal reflux, with esophagitis, with bleeding
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative, esophagus, due to, gastrointestinal reflux disease, with bleeding
Related codes in K21.0
Frequently asked questions
What is ICD-10 code K21.01?
K21.01 is the ICD-10-CM code for gastro-esophageal reflux disease with esophagitis, with bleeding, in the block K20-K31 (Diseases of esophagus, stomach and duodenum).
Is K21.01 a billable code?
Yes. K21.01 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K21.01 belong to?
It belongs to category K21 – Gastro-esophageal reflux disease.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.