K29.40 Chronic atrophic gastritis without bleeding

Billable ICD-10-CM code, FY2026.

Applies from K29 Gastritis and duodenitis

Excludes1 (never code together)

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

Applies from K29.4 Chronic atrophic gastritis

Applicable to

• Gastric atrophy

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 535.10 Atrophic gastritis, without mention of hemorrhage (approximate)

Code annotations containing back-references to K29.40

Back-references to K29

• Type 1 Excludes: K92.2 Gastrointestinal hemorrhage, unspecified ("gastritis and duodenitis with hemorrhage (K29.-)")

Diagnosis Index entries for K29.40

• Atrophy, atrophic (of) › gastric
• Atrophy, atrophic (of) › stomach
• Gastritis (simple) › atrophic (chronic)
• Gastritis (simple) › chronic (antral) (fundal) › atrophic

Nearby codes

• K29.21 Alcoholic gastritis with bleeding
• K29.3 Chronic superficial gastritis
• K29.30 Chronic superficial gastritis without bleeding
• K29.31 Chronic superficial gastritis with bleeding
• K29.4 Chronic atrophic gastritis
• K29.40 Chronic atrophic gastritis without bleeding (this code)
• K29.41 Chronic atrophic gastritis with bleeding
• K29.5 Unspecified chronic gastritis
• K29.50 Unspecified chronic gastritis without bleeding
• K29.51 Unspecified chronic gastritis with bleeding
• K29.6 Other gastritis