ICD-10-CM Codes Browse (Tabular) Diagnostic External Drug Neoplasm

K21.9 – Gastro-esophageal reflux disease without esophagitis

Coding Notes

Active

Billable, valid for HIPAA-covered transactions

Applicable To

Esophageal reflux NOS

GEM Conversion to ICD-9 CM

530.81

Fs: 00000 – Esophageal reflux

MDC / MS-DRG Reference

DRG 391

ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITH MCC

DRG 392

ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITHOUT MCC

Back Reference of Diagnostic Codes

Allergy, allergic (reaction) (to) T78.40

milk protein See also Allergy, food Z91.011

gastroesophageal reflux See also Reaction, adverse, food K21.9

Cardiochalasia K21.9

Chalasia (cardiac sphincter) K21.9

Disease, diseased See also Syndrome

gastroesophageal reflux (GERD) K21.9

GERD (gastroesophageal reflux disease) K21.9

Reflux K21.9

acid K21.9

esophageal K21.9

gastroesophageal K21.9

Relaxation

cardioesophageal K21.9

Sibling Codes

K21.0

Gastro-esophageal reflux disease with esophagitis

Parent Sibling Codes

K20

K21

Gastro-esophageal reflux disease

K22

Other diseases of esophagus

K23

Disorders of esophagus in diseases classified elsewhere

K25

K26

K27

Peptic ulcer, site unspecified

K28

Gastrojejunal ulcer

K29

Gastritis and duodenitis

View in Tabular

Code	Title
K00-K95	Diseases of the digestive system (K00-K95)
K20-K31	Diseases of esophagus, stomach and duodenum (K20-K31)
K21	Gastro-esophageal reflux disease
K21.9	Gastro-esophageal reflux disease without esophagitis Applicable to Esophageal reflux NOS