K29.4

Chronic atrophic gastritis

Header / non-billable

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This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · K29.4
Synonyms

Gastric atrophy

Inherited from K29Gastritis and duodenitis
Excludes 1

eosinophilic gastritis or gastroenteritis (K52.81) Zollinger-Ellison syndrome (E16.4)

Inherited from K20-K31Diseases of esophagus, stomach and duodenum
Excludes 2

hiatus hernia (K44.-)

Inherited from chapter 11Diseases of the digestive system
Excludes 2

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

Official Guidelines for K29.4

FY 2026 ›