Gastro-esophageal reflux disease without esophagitis
Billable / specific
K21.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Esophageal reflux NOS
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from K21)
- certain infectious and parasitic diseases (A00-B99) (from K21)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from K21)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) (from K21)
- endocrine, nutritional and metabolic diseases (E00-E88) (from K21)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from K21)
- neoplasms (C00-D49) (from K21)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from K21)
- hiatus hernia (K44.-) (from K21)
Also known as
- Esophageal reflux NOS
- Allergy, allergic, milk protein, gastroesophageal reflux
- Cardiochalasia
- Chalasia
- Disease, diseased, gastroesophageal reflux
- GERD
- Reflux
- Reflux, acid
- Reflux, esophageal
- Reflux, gastroesophageal
- Relaxation, cardioesophageal
Parent code
- K21Gastro-esophageal reflux diseaseHeader
Related codes
- K21.0Gastro-esophageal reflux disease with esophagitisHeader