K21.00 diagnosis code · Billable code · FY2027
K21.00 Gastro-esophageal reflux disease with esophagitis, without bleeding
- Billable
- Not CC/MCC
- POA reported
K21.00 ICD-10 code: a billable diagnosis code in FY2027, one of 3 billable codes in category K21.
Where it sits
- Chapter 11 Diseases of the digestive system (K00-K95)
- K20-K31 Diseases of esophagus, stomach and duodenum (K20-K31)
- K21 Gastro-esophageal reflux disease
- K21.0 Gastro-esophageal reflux disease with esophagitis
- K21.00 Gastro-esophageal reflux disease with esophagitis, without bleeding
- CC / MCC
- Neither
- MS-DRG
- 391-392
- HCC V28
- –
- POA
- Reported
- Code Editor
- –
- Index entries
- 7
Instructions
At K21.00
Inclusion terms
- Reflux esophagitis
Notes that also apply
Block K20-K31 instructions (Excludes2 1): printed on the block page.
Chapter 11 instructions (Excludes2 8): printed on the chapter 11 page.
Index entries
- Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)›due to gastrointestinal reflux disease (without bleeding) → K21.00
- Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding)›reflux → K21.00
- Disease, diseased›gastroesophageal reflux (GERD)›with esophagitis (without bleeding) → K21.00
- Reflux›esophageal›with esophagitis (without bleeding) → K21.00
- Reflux›gastroesophageal›with esophagitis (without bleeding) → K21.00
- Allergy, allergic (reaction) (to)›milk protein›gastroesophageal reflux›with esophagitis (without bleeding) → K21.00
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative›esophagus (peptic)›due to›gastrointestinal reflux disease (without bleeding) → K21.00
NCHS Alphabetic Index. Index first, then the Tabular List.
Medicare grouping and edits
| CC / MCC | Neither |
|---|---|
| Appendix B | MDC 06 Diseases and Disorders of the Digestive System, MS-DRG 391-392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC…) |
| Code Editor | – |
| POA | Reported |
| HCC V28 | – |
CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.