K21.01

Gastro-esophageal reflux disease with esophagitis, with bleeding

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 10 never code together

K21code

Excludes1

Excludes2

Excludes2

certain conditions originating in the perinatal period (P04-P96)P04-P96
certain infectious and parasitic diseases (A00-B99)A00-B99
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes

No further instructional notes apply.

Index entries leading here 5

Allergy, allergic (reaction) (to) T78.40
- milk protein Z91.0110
  - gastroesophageal reflux K21.9
    - with esophagitis (without bleeding) K21.00
      - with bleeding K21.01
Disease, diseased — see also Syndrome
- gastroesophageal reflux (GERD) K21.9
  - with esophagitis (without bleeding) K21.00
    - with bleeding K21.01
Ulcer, ulcerated, ulcerating, ulceration, ulcerative
- esophagus (peptic) K22.10
  - due to
    - gastrointestinal reflux disease (without bleeding) K21.00
      - with bleeding K21.01
Esophagitis (acute) (alkaline) (chemical) (chronic) (infectional) (necrotic) (peptic) (postoperative) (without bleeding) K20.90
- due to gastrointestinal reflux disease (without bleeding) K21.00
  - with bleeding K21.01
- reflux K21.00
  - with bleeding K21.01
Reflux K21.9
- esophageal K21.9
  - with esophagitis (without bleeding) K21.00
    - with bleeding K21.01
- gastroesophageal K21.9
  - with esophagitis (without bleeding) K21.00
    - with bleeding K21.01

Alongside this code 1 same parent — K21.0

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.